# MSL Performance

> ECU REMAPPERS


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## Products

- [Mercedes C63 W204 Quaife LSD](https://www.mslperformance.co.uk/product/mercedes-c63-w204-quaife-lsd/): Quaife LSD Upgrade for the Mercedes-AMG C63 (W204) The W204 C63 has never struggled to make power. The 6.2-litre M156 is a legend for a reason: instant response, massive torque, and that savage shove that turns every straight into an event. But here’s the thing most owners learn the moment they start pushing on: the factory diff setup is the weak link in how the car puts that power down. One wheel spinning, traction control flashing, the rear end getting messy when you want it to be clean and confident — it’s not that the C63 can’t handle it… it’s […]
- [Mercedes C63 W204 iPE Cat-Back Valvetronic Exhaust](https://www.mslperformance.co.uk/product/mercedes-c63-w204-ipe-cat-back-valvetronic-exhaust/): *Headers and mid pipe sold separately*   iPE Cat-Back Valvetronic Exhaust for the Mercedes-AMG C63 (W204) Let’s be honest — you didn’t buy a W204 C63 to be subtle. You bought it for that legendary 6.2-litre M156 V8: instant, naturally aspirated violence with a soundtrack that still embarrasses most modern cars. But from the factory? The C63 is polite when it doesn’t need to be. The iPE Cat-Back system with the Valvetronic muffler is built to fix that. It’s the upgrade for drivers who want the car to sound like a proper AMG when you’re on it, but still have […]
- [Mercedes C63 W204 iPE Headers + Catless Mid Pipe](https://www.mslperformance.co.uk/product/mercedes-c63-w204-ipe-headers-catless-mid-pipe/): iPE Headers + Mid Pipe Upgrade for the Mercedes-AMG C63 (W204) Let’s be honest — if you’re looking at iPE headers for a W204 C63, you’re not here for “a bit more noise”. You’re here because the M156 deserves to breathe properly. The 6.2 is one of AMG’s greatest hits: instant response, savage mid-range, and a top-end that feels like it should go on forever. The problem? From the factory, the exhaust side is packed with compromises — built for mass production, emissions targets, and keeping things civilised. Great for the brochure. Not so great for unlocking the full personality […]
- [ECU Remap BMW M340i (G20) & M440i (G22) – B58 3.0L](https://www.mslperformance.co.uk/product/ecu-remap-bmw-m340i-g20-m440i-g22-b58-3-0l/): ECU Remap BMW M340i (G20) & M440i (G22) – B58 3.0L *Please note with late 2020 models the ECU may be locked, if it is, we offer an ECU unlocking service for £1500 with the required flasher* Let’s be honest, the G20 M340i and G22 M440i are already devastatingly quick in the real world. That B58 3.0-litre turbo straight-six is smooth, tough and responds brilliantly to a smart calibration. But from the factory, there’s headroom left on the table—softened throttle mapping, torque limits in lower gears and a power curve that fades earlier than it needs to. At MSL Performance […]
- [ECU Remap BMW M135i xDrive (F40) & M235i xDrive GC (F44) – B48 Engine](https://www.mslperformance.co.uk/product/ecu-remap-bmw-m135i-xdrive-f40-m235i-xdrive-gc-f44-b48-engine/): ECU Remap BMW M135i xDrive (F40) & M235i xDrive Gran Coupé (F44) – B48 Engine *Please note with all late 2020 onwards models the ECU may be locked, if it is we offer an unlocking service for £1500 including the required flasher tool* Let’s be honest, the F40 M135i and F44 M235i xDrive are far more capable than the badge and spec sheet suggest. On paper they’re “hot hatches” and “compact coupés”. In the real world, they’re weapons: xDrive traction, sharp chassis and a very serious 2.0-litre turbo engine under the bonnet. But you’ve probably already noticed it – that […]
- [K&N High-Flow Air Filters BMW M5 & M8 (F90/F91/F92/F93 – S63 4.4L V8)](https://www.mslperformance.co.uk/product/kn-high-flow-air-filters-bmw-m5-m8-f90-f91-f92-f93-s63-4-4l-v8/): K&N High-Flow Panel Air Filters for BMW M5 & M8 (F90/F91/F92/F93 – S63 4.4L V8) Part No: 33-3128  Quantity Required: 1 set (2 filters included per box) Your F90 M5 or F9x M8 is a serious piece of engineering. The S63 4.4-litre twin-turbo V8 delivers supercar performance in a saloon, coupé or Gran Coupé body – huge torque, effortless speed and massive tuning potential. But even this engine is still forced to breathe through restrictive, disposable paper filters that were designed around cost and emissions targets, not enthusiasts. It’s time to let that V8 breathe properly. The K&N High-Flow Panel Air […]
- [K&N High-Flow Air Filters BMW M3 & M4 (G80/G81/G82/G83 – S58 3.0L)](https://www.mslperformance.co.uk/product/kn-high-flow-air-filters-bmw-m3-m4-g80-g81-g82-g83-s58-3-0l/): K&N High-Flow Panel Air Filters for BMW M3 & M4 (G80/G81/G82/G83 – S58 3.0L) Part No: 33-3171  Quantity Required: 1 set (2 filters included per box) Your G-series M3 or M4 is already a serious piece of kit. The S58 3.0-litre twin-turbo straight-six is hugely capable out of the box – massive torque, big power and huge tuning potential. But even this engine is still breathing through restrictive, disposable paper filters that were designed around cost and emissions, not outright performance. It’s time to let the S58 breathe properly. The K&N High-Flow Panel Air Filters (33-3171) are the ideal “first mod” […]
- [K&N High-Flow Air Filters BMW M3, M4, M5 & M6 (S55 & S63 Engines)](https://www.mslperformance.co.uk/product/kn-high-flow-air-filters-bmw-m3-m4-m5-m6-s55-s63-engines/): K&N High-Flow Panel Air Filters for BMW M3, M4, M5 & M6 (S55 & S63 Engines) Part No: 33-2488  Quantity Required: 1 set (2 filters included per box) If you’re driving an M3, M4, M5 or M6, you already know you’re in something serious. The twin-turbo S55 and S63 engines are monsters straight from the factory – huge power, huge potential and that unmistakable M character. But even these engines are still made to breathe through restrictive, disposable paper filters designed around cost and emissions targets, not enthusiasts. They get the job done, but they’re not exactly helping your M engine […]
- [K&N High-Flow Air Filter BMW M340i (G20/G21) & M440i (G22/G23) B58 3.0L](https://www.mslperformance.co.uk/product/kn-high-flow-air-filter-bmw-m340i-g20-g21-m440i-g22-g23-b58-3-0l/): K&N High-Flow Panel Air Filter for BMW M340i (G20/G21) & M440i (G22/G23) – B58 3.0L Part No: 33-3136  Quantity Required: 1 (Filters are sold individually) Your G20 M340i or G22 M440i is everything a modern BMW should be – sharp, brutally fast in the real world and powered by the incredible B58 3.0-litre turbo straight-six. But even this engine is still trying to breathe through a restrictive, disposable paper filter designed around cost and emissions, not enthusiasts. It’s time to let the B58 breathe properly. The K&N High-Flow Panel Air Filter is the ideal “first mod” for any M340i or M440i. […]
- [K&N High-Flow Air Filter for BMW M135i xDrive (F40) & M235i xDrive GC (F44) – 2.0L](https://www.mslperformance.co.uk/product/kn-high-flow-air-filter-for-bmw-m135i-xdrive-f40-m235i-xdrive-gc-f44-2-0l/): K&N High-Flow Panel Air Filter for BMW M135i xDrive (F40) & M235i xDrive Gran Coupé (F44) – 2.0L Turbo Part No: 33-5111  Quantity Required: 1 (Filters are sold individually) The latest-generation M135i xDrive and M235i xDrive Gran Coupé might have lost two cylinders compared to their older six-cylinder cousins, but that 2.0-litre turbo four is seriously potent. With xDrive traction and modern chassis tech, these cars are brutally effective in the real world. From the factory though, that engine is still breathing through a restrictive, disposable paper air filter. It does the job, but it isn’t designed with enthusiasts or tuning […]
- [K&N High-Flow Air Filter BMW M140i M240i 340i & 440i (B58 3.0L)](https://www.mslperformance.co.uk/product/kn-high-flow-air-filter-bmw-m140i-m240i-b58-3-0l/): K&N High-Flow Panel Air Filter for BMW M140i, M240i & 440i (B58 3.0L) Part No: 33-3051  Quantity Required: 1 (Filters are sold individually) Your BMW M140i, M240i or 440i is already one of the best all-round performance cars on the road. The B58 3.0-litre turbo straight-six is smooth, brutally effective and responds brilliantly to tuning. But from the factory, it’s forced to breathe through a restrictive, disposable paper air filter that was never designed with enthusiasts in mind. It’s time to let that engine breathe properly. The K&N High-Flow Panel Air Filter is the perfect “first mod” for any B58-powered F […]
- [K&N High-Flow Air Filter BMW M135i, M235i & 435i (N55 3.0L)](https://www.mslperformance.co.uk/product/kn-high-flow-air-filter-bmw-m135i-m235i-435i-n55-3-0l/): K&N High-Flow Panel Air Filter for BMW M135i, M235i & 435i (N55 3.0L) Part No: 33-2997  Quantity Required: 1 (Filters are sold individually) Your M135i, M235i or 435i is already a seriously special car. The N55 3.0-litre turbo straight-six is smooth, punchy and hugely tuneable – it’s the heart of the whole experience. But from the factory, it’s breathing through a restrictive, throwaway paper filter that prioritises cost and emissions over performance. It’s time to let the engine breathe properly. The K&N High-Flow Panel Air Filter is the ideal “first mod” for any N55-powered BMW. It drops straight into the original […]
- [ECU Remap BMW M140i, M240i, 340i & 440i (B58 Engine)](https://www.mslperformance.co.uk/product/ecu-remap-bmw-m140i-m240i-340i-440i-b58-engine/): ECU Remap BMW M140i, M240i, 340i & 440i (B58 Engine)   Let’s be honest, you already own an icon. The M140i and its B58-powered siblings (M240i, 340i, 440i) are arguably the high-water mark for the modern 6-cylinder BMW. The B58 engine is an engineering masterpiece: incredibly smooth, devastatingly powerful, and famously over-engineered. But have you ever planted your foot and felt that, even as fast as it is, BMW left an enormous amount of performance locked away? That, to protect the full-fat ‘M’ models, they put a “governor” on its true potential? You’re right. They did. And here at MSL […]
- [ECU Remap BMW M135i, M235i & 435i (N55 Engine)](https://www.mslperformance.co.uk/product/ecu-remap-bmw-m135i-m235i-435i-n55-engine/): ECU Remap BMW M135i, M235i & 435i (N55 Engine)   Let’s be honest, you already own a brilliant car. The M135i, M235i, and 435i are the sweet spot of the BMW range, powered by the legendary N55 3.0-litre straight-six. It’s smooth, powerful, and an absolute joy to drive, with a famously tuneable engine. But have you ever planted your foot and felt that, deep down, BMW was holding it back? That to protect its ‘M’ car big brothers, they left a huge, tantalising chunk of performance on the table? You’re right. They did. And here at MSL Performance in Birmingham, […]
- [Milltek High-Flow Sports Cat & OPF Delete for A45S W177 / CLA45S C118](https://www.mslperformance.co.uk/product/milltek-high-flow-sports-cat-opf-delete-for-a45s-w177-cla45s-c118/): Milltek High-Flow Sports Cat & OPF Delete for A45S W177 / CLA45S C118   Let’s be honest, your A45S or CLA45S is the very pinnacle of the 2.0L turbo world, an absolute engineering marvel. But from the factory, its potential is heavily suppressed. The combination of a highly restrictive catalytic converter and the Otto Particulate Filter (OPF) system strangles the M139 engine, muting its sound, dulling throttle response, and leaving a huge amount of power on the table. For the owner who wants a massive performance gain without the raw, unrefined noise of a full decat, this Milltek Sport High-Flow […]
- [Milltek Decat Downpipe & OPF Delete for A45S W177 / CLA45S C118](https://www.mslperformance.co.uk/product/milltek-decat-downpipe-opf-delete-for-a45s-w177-cla45s-c118/): Milltek Decat Downpipe & OPF Delete for A45S W177 / CLA45S C118 SSXMZ155 Let’s be honest, your A45S is the king of the hyper-hatch world, an absolute marvel of engineering. But from the factory, its voice is a shadow of what it should be. The highly restrictive catalytic converter and Otto Particulate Filter (OPF) system are strangling the 2.0L M139 engine, robbing it of power, dulling its throttle response, and silencing the raw, aggressive soundtrack it’s capable of. It’s time to uncage the beast. This Milltek Sport Large-Bore Downpipe is the single most effective hardware upgrade to completely transform your […]
- [MSL Performance 3.5" Decat Downpipes for C63 & C63S AMG W205](https://www.mslperformance.co.uk/product/msl-performance-3-5-decat-downpipes-for-c63-c63s-amg-w205/): MSL Performance 3.5″ Decat Downpipes for C63 & C63S AMG (W205)   Let’s be honest, you own a monster. The W205 C63, with its 4.0-litre “hot-vee” Bi-Turbo V8, is a masterpiece of modern muscle. But its single biggest flaw is how muffled it sounds from the factory. The standard catalytic converters, buried deep in the V of the engine, are incredibly restrictive. They are designed to choke the engine for emissions, and in doing so, they kill the sound, restrict horsepower, and stifle the twin turbos. It’s time to uncage the beast. Our 3.5-inch MSL Performance Decat Downpipes are the […]
- [K&N High-Flow Panel Air Filters for E63S AMG (W213) & Other V8 Models](https://www.mslperformance.co.uk/product/kn-high-flow-panel-air-filters-for-e63s-amg-w213-other-v8-models/): K&N High-Flow Panel Air Filters for E63S AMG (W213) & Other V8 Models   Part No: 33-3140 This is a complete set of two (2) filters. Let’s be honest, you own a technological marvel. The W213 E63S is the pinnacle of the super-saloon, powered by the incredible 4.0-litre “hot-vee” Bi-Turbo V8. It’s a symphony of brutal power and intelligent design. But those advanced turbochargers are still being forced to inhale through restrictive, disposable paper filters. It’s time to let your engine breathe. The K&N High-Flow Panel Filters are the single most effective “first mod” you can make. They are engineered […]
- [K&N High-Flow Panel Air Filters for 5.5L V8 Bi-Turbo](https://www.mslperformance.co.uk/product/kn-high-flow-panel-air-filters-for-5-5l-v8-bi-turbo/): K&N High-Flow Panel Air Filters for 5.5L V8 Bi-Turbo (M157 Engines) *2 Per Box*   Part No: 33-2474 Let’s be honest, you own a Bi-Turbo brute. The W212 E63 (from 2012-2016) with the 5.5-litre M157 V8 is a torque monster, a true executive missile. But those twin turbochargers are still being forced to inhale through restrictive, disposable paper filters. It’s time to let your engine breathe. The K&N High-Flow Panel Filters are the single most effective “first mod” you can make. They are engineered to be the last air filters you will ever buy for your car. Designed as a […]
- [K&N High-Flow Panel Air Filters for 3.0L V6 Bi-Turbo](https://www.mslperformance.co.uk/product/kn-high-flow-panel-air-filters-for-3-0l-v6-bi-turbo/): K&N High-Flow Panel Air Filters for 3.0L V6 Bi-Turbo (43 AMG / 400 / 450 Models)   Part No: 33-5032 Quantity Required: 2 (Filters are sold individually) Let’s be honest, your 43-series AMG is the perfect sweet spot of usable, all-weather performance. But that potent 3.0-litre V6 Bi-Turbo engine is being held back, forced to breathe through restrictive, disposable paper filters. It’s time to let your engine breathe. The K&N High-Flow Panel Filters are the single best “first mod” you can make. They are engineered to be the last air filters you will ever buy for your car. Designed as […]
- [K&N High-Flow Panel Air Filters for C63 W205](https://www.mslperformance.co.uk/product/kn-high-flow-panel-air-filters-for-4-0l-v8-bi-turbo-m177-m176/): K&N High-Flow Panel Air Filters for C63 W205   Part No: 33-3072 Quantity Required: 2 (Filters are sold individually) Let’s be honest, you own one of the most advanced and powerful V8s on the market. The 4.0-litre Bi-Turbo engine in your AMG is a masterpiece of “hot-vee” engineering, but its twin turbos are still inhaling through restrictive, disposable paper filters. It’s time to let your engine breathe. The K&N High-Flow Panel Filters are the single most effective “first mod” you can make. They are engineered to be the last air filters you will ever buy for your car. Designed as […]
- [K&N High-Flow Panel Air Filters C63 W204 / E63 W211](https://www.mslperformance.co.uk/product/kn-high-flow-panel-air-filters-c63-w204/): K&N High-Flow Panel Air Filters for all 6.2L  AMG Models   Part No: 33-2405 Quantity Required: 2 (Filters are sold individually) Let’s be honest, you own a legend. The 6.2-litre M156 V8 is one of the greatest, most characterful engines ever built by AMG. It’s a high-revving, naturally-aspirated monster that lives and breathes on airflow. So why are you letting it inhale through restrictive, disposable paper filters? It’s time to upgrade. The K&N High-Flow Panel Filters are the single most effective “first mod” you can make. They are engineered to be the last air filters you will ever buy for […]
- [Eventuri Carbon Fibre Intake System for A35 / CLA35 AMG](https://www.mslperformance.co.uk/product/eventuri-carbon-fibre-intake-system-for-a35-cla35-amg/): Eventuri Carbon Fibre Intake System for A35 / CLA35 AMG *Picture includes optional turbo pipe*   Let’s be honest, your A35 AMG is a precision-engineered hot hatch, but pop the bonnet and you’re greeted by a mass of black plastic. The factory airbox is designed for one thing: to silence the aggressive 2.0L turbo and meet production line targets. It’s a restrictive compromise that chokes your engine’s true potential. If you are looking for the absolute best, most-researched, and most beautifully constructed intake on the market, this is it. The Eventuri Carbon Fibre Intake System is a complete, second-to-none engineering […]
- [Pipercross Performance Air Filter for A35 / CLA35 AMG](https://www.mslperformance.co.uk/product/pipercross-performance-air-filter-for-a35-cla35-amg/): The first and simplest step to unlocking your engine’s true potential. Your AMG’s 2.0L turbocharged engine is a high-performance unit, but the standard paper air filter that it came with is a restrictive compromise. It’s designed to be cheap to produce and is thrown away at every service. To truly let your engine breathe, you need a high-performance solution. The Pipercross Performance Panel Filter is the single best “first mod” you can do. Unlike paper or cotton filters, Pipercross uses a unique, multi-layered foam construction that allows for significantly more airflow – up to 30% more than a standard filter. […]
- [Milltek OPF Delete Pipe for A35 / CLA35 AMG](https://www.mslperformance.co.uk/product/milltek-opf-delete-pipe-for-a35-cla35-amg/): Milltek OPF Delete Pipe for A35 / CLA35 AMG   Let’s be honest, you love your A35, but it’s just too quiet. In its most aggressive settings, you know that 2.0L turbo is being held back, muffled by restrictive emissions equipment. The main culprit for this suppressed sound? The Otto Particulate Filter (OPF). If you’re not yet ready for a full Stage 2 downpipe but are desperate to unleash the true voice of your AMG, this Milltek Sport OPF Delete is the perfect solution. This high-flow, precision-engineered pipe is designed to directly replace the bulky and restrictive factory OPF section […]
- [Milltek Sport High-Flow Sports Cat Downpipe for A35 / CLA35 AMG](https://www.mslperformance.co.uk/product/milltek-sport-high-flow-sports-cat-downpipe-for-a35-cla35-amg/): Milltek Sport High-Flow Sports Cat Downpipe for A35 / CLA35 AMG   Let’s be honest, your A35 AMG is a brilliant, sharp-handling hot hatch. But in the era of restrictive emissions equipment, the factory has left it feeling… muffled. The factory catalytic converter and Otto Particulate Filter (OPF) choke the 2.0L turbo engine, robbing it of power, dulling its throttle response, and silencing the aggressive soundtrack it deserves. For the owner who wants to unlock serious performance without committing to the raw, unadulterated noise of a full decat, the Milltek Sport High-Flow Sports Cat Downpipe is the perfect solution. This […]
- [Milltek catless and OPF delete downpipe](https://www.mslperformance.co.uk/product/milltek-catless-and-opf-delete-downpipe/): Milltek Sport Catless Downpipe for A35 / CLA35 AMG   Let’s be honest, your A35 AMG is a brilliant, sharp-handling hot hatch. But in the era of restrictive emissions equipment, the factory has left it feeling… muffled. The combination of the catalytic converter and the Otto Particulate Filter (OPF) chokes the 2.0L turbo engine, robbing it of power, dulling its throttle response, and silencing the aggressive soundtrack it deserves. It’s time to unleash its true voice. This Milltek Sport Catless and OPF Delete Downpipe is the single most effective hardware upgrade to uncage your A35. By removing both of these […]
- [BLACKBOOST INTAKE GEN2 S63 (S) W222](https://www.mslperformance.co.uk/product/blackboost-intake-gen2-s63-s-w222/): BlackBoost Gen.2 Performance Cold Air Intake for S63 / S63S AMG (M157)   Unleash the True Power of Your Flagship. You own the definitive flagship: the S63 AMG. It is the ultimate expression of V8 Bi-Turbo power wrapped in first-class luxury, an iron fist in a velvet glove. But even this masterpiece has a hidden limitation: a restrictive factory air intake system designed for silence over sheer, unadulterated performance. To unleash the full, commanding potential of your 5.5L M157 engine, you must allow it to breathe. The BlackBoost Gen.2 Performance Cold Air Intake System is the ultimate solution. This is […]
- [BLACKBOOST INTAKE GEN2 C63 W205/ C63S W205 / GLC63 X253 / GLC63S X253](https://www.mslperformance.co.uk/product/blackboost-intake-gen2-c63-w205-c63s-w205-glc63-x253-glc63s-x253/): BlackBoost Gen.2 Performance Cold Air Intake System for C63 / C63S AMG (W205)   Unleash the Beast: Optimised Airflow for Your M177 Bi-Turbo V8. You own the heart of modern AMG: the formidable 4.0-litre Bi-Turbo M177 V8 engine in your W205 C63 or C63S. It’s a masterpiece of power, but even AMG’s finest can be improved. The factory intake system, designed with necessary compromises, presents a bottleneck to its true potential. To truly uncage the beast within, you need to let it breathe unhindered. The BlackBoost Gen.2 Performance Cold Air Intake System is the ultimate bolt-on solution. This isn’t just […]
- [MSL PERFORMANCE 3.5" DECAT DOWNPIPE & MID PIPE A45 W176 / CLA45 C117 / GLA45 X156](https://www.mslperformance.co.uk/product/msl-performance-3-5-decat-downpipe-mid-pipe-for-a45-cla45-gla45-amg/): MSL Performance 3.5″ Decat Downpipe & Mid Pipe for A45 / CLA45 / GLA45 AMG   Unleash the True Voice and Performance of Your M133 Engine. The 2.0-litre M133 engine in your A45, CLA45, or GLA45 is a high-strung masterpiece, but it’s held back by a restrictive factory exhaust system. The standard catalytic converter and downpipe are designed for emissions and comfort, not for maximum performance. To unlock the full potential of your AMG, you need to free up the exhaust flow. Our 3.5-inch Decat Downpipe and Mid Pipe is the ultimate solution. By removing the restrictive catalyst and increasing […]
- [BLACKBOOST INTAKE A45 W176/ CLA45 C117 /GLA45 X156](https://www.mslperformance.co.uk/product/blackboost-intake-a45-w176-cla45-c117-gla45-x156/): BlackBoost Performance Cold Air Intake System for A45 / CLA45 / GLA45 AMG   Take your AMG’s performance to the next level. You already own a pocket rocket. The 2.0L M133 engine in the A45, CLA45, and GLA45 AMG is a marvel of modern engineering, but the factory airbox was designed with compromises. To truly unlock your engine’s potential, you need to let it breathe. The BlackBoost Performance Cold Air Intake System is the ultimate bolt-on solution, meticulously engineered to overcome the restrictions of the factory setup and deliver a significant increase in power, response, and sound. This isn’t just […]
- [MERCEDES GEARBOX TUNE 4.OL / 5.5L /6.3L ENGINES](https://www.mslperformance.co.uk/product/mercedes-gearbox-tune-4-ol-5-5l-6-3l-engines/): Custom Gearbox (TCU) Remap for V8 AMG 7G-Tronic Transmissions   Applicable to 4.0L, 5.5L & 6.2L V8 AMG Models You own the heart of the Mercedes-AMG brand: a thunderous, hand-built V8 engine. Whether it’s the raw, naturally-aspirated fury of the 6.2L M156, the immense turbocharged torque of the 5.5L M157, or the advanced power of the 4.0L M177, you have a powerhouse at your command. But have you ever felt, especially after an engine remap, that the gearbox is the final barrier to unlocking its true, unbridled performance? A slight hesitation on a downshift, a gear change that doesn’t feel […]
- [MERCEDES 7 SPEED GEARBOX TUNE (2.0L AND 3.0L ENGINES)](https://www.mslperformance.co.uk/product/mercedes-7-speed-gearbox-tune-2-0l-and-3-0l-engines/): Custom Gearbox (TCU) Remap for Mercedes 7G-Tronic Transmissions   Applicable to 2.0L & 3.0L AMG and Mercedes-Benz Models You’ve tuned the engine, or maybe you just love the punchy performance your car has from the factory. The power is there. But have you ever felt the gearbox is just a fraction of a second behind your command? A slight hesitation when you pull a paddle, an upshift that comes too early in Sport mode, or a general feeling that it’s programmed more for comfort than for spirited driving? The missing link isn’t more power; it’s smarter, faster control. That’s where […]
- [MERCEDES SL63 R231 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-sl63-r231-ecu-remap/): Custom Remap for the Mercedes-AMG SL63 (R231) at MSL Performance   Let’s be honest, you already own the quintessential performance roadster. The R231 SL63 is a brute in a velvet glove, a stunning blend of open-top luxury and the immense power of the 5.5-litre Bi-Turbo V8. It’s an iron fist in a silk driving glove. But have you ever been behind the wheel on a perfect day, roof down, and felt that while the power is immense, its delivery could be even more explosive? That there’s a sharper, more ferocious beast waiting to be unleashed? You’re right. There is. Here […]
- [MERCEDES S63 W222 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-s63-w222-ecu-remap-2/): Custom Remap for the Mercedes-AMG S63 (W222 4.0 Bi-Turbo) at MSL Performance   Let’s be honest, you already own the definitive high-performance luxury saloon. The facelift W222 S63, with its advanced 4.0-litre Bi-Turbo V8, represents the very pinnacle of automotive engineering—a seamless blend of ultimate comfort and breath taking power. But have you ever been behind the wheel, experiencing that incredible, silent surge of acceleration, and sensed that deep down, the engineers had to keep its final, most potent form in reserve? A sharper, more commanding presence waiting to be unlocked? You’re right. There is. Here at MSL Performance in […]
- [MERCEDES S63 W222 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-s63-w222-ecu-remap/): Custom Remap for the Mercedes-AMG S63 (W222 5.5 Bi-Turbo) at MSL Performance   Let’s be honest, you already own the ultimate expression of high-performance luxury. The W222 S63 is the benchmark, a sublime fusion of S-Class opulence and the immense power of the 5.5-litre Bi-Turbo V8. It is, by any standard, a masterpiece. But have you ever been behind the wheel, experiencing that effortless, continent-crossing surge, and sensed that deep down, the engineers had to restrain this engine’s true, unbridled potential? A sharper, more commanding presence waiting to be unlocked? You’re right. There is. Here at MSL Performance in Birmingham, […]
- [MERCEDES ML63 W166 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-ml63-w166-ecu-remap/): Custom Remap for the Mercedes-AMG ML63 (W166) at MSL Performance   Let’s be honest, you already own a true pioneer of the performance SUV world. The W166 ML63, powered by the legendary 5.5-litre Bi-Turbo V8, is a formidable machine that perfectly blends luxury, practicality, and raw V8 muscle. It’s a vehicle that commands respect. But have you ever been behind the wheel, felt that immense wave of torque, and had the feeling that deep down, this powerhouse of an engine is capable of so much more? That AMG built it with a whole other level of performance just waiting to […]
- [MERCEDES GLS63 X167 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-gls63-x167-ecu-remap/): Custom Remap for the Mercedes-AMG GLS 63 (X167) at MSL Performance   Let’s be honest, you already own the undisputed king of luxury SUVs. The latest GLS 63 is the very definition of a flagship, a seven-seat sanctuary of technology and comfort, powered by the incredible 4.0-litre Bi-Turbo V8. It’s a vehicle that operates in a class of its own. But have you ever been behind the wheel, felt that immense, seamless power, and sensed that deep down, the engineers had to leave some of its ultimate performance potential untapped? A sharper, more commanding presence waiting to be unlocked? You’re […]
- [GLS63 X166 ECU REMAP](https://www.mslperformance.co.uk/product/gls63-x166-ecu-remap/): Custom Remap for the Mercedes-AMG GLS 63 (X166) at MSL Performance   Let’s be honest, you already own the ultimate family flagship. The GLS 63 is the S-Class of SUVs, a seven-seat luxury behemoth with the thunderous heart of the 5.5-litre Bi-Turbo V8. It’s a vehicle that provides effortless performance and commands the road. But have you ever been behind the wheel, felt that immense power, and thought that deep down, it could be even more… commanding? More responsive, more aggressive, a whole lot more potent? You’re right. It can be. Here at MSL Performance in Birmingham, we are experts […]
- [MERCEDES GLE63S W167 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-gle63s-w167-ecu-remap/): Custom Remap for the Mercedes-AMG GLE 63S (W167) at MSL Performance   Let’s be honest, you already own the apex predator of the SUV world. The W167 GLE 63S is a masterpiece of engineering, a perfect fusion of commanding luxury, cutting-edge technology, and the astonishing power of the 4.0-litre Bi-Turbo V8. It is, by any measure, at the very pinnacle of performance. But have you ever planted your foot, felt that breath taking acceleration, and sensed that deep down, even for their top-tier ‘S’ model, AMG left a final fraction of performance on the table? A sharper, more ferocious edge […]
- [MERCEDES GLE63 W167 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-gle63-w167-ecu-remap/): Custom Remap for the Mercedes-AMG GLE 63 (W167) at MSL Performance   Let’s be honest, you already own a technological tour de force. The latest W167 GLE 63 is a stunning combination of commanding luxury, state-of-the-art technology, and staggering performance from its 4.0-litre Bi-Turbo V8 heart. It’s the super SUV perfected. But have you ever been behind the wheel, felt that explosive acceleration, and sensed that deep down, the engineers had to leave some of its true ferocity on the table? A sharper edge, a more aggressive character, a whole new level of performance waiting to be uncaged? You’re right. […]
- [MERCEDES GLE63 / GLE63S W166 ECU REMAP](https://www.mslperformance.co.uk/product/1419/): Custom Remap for the Mercedes-AMG GLE 63 & GLE 63S (W166) at MSL Performance   Let’s be honest, you already own the king of the super SUVs. The W166 GLE 63, powered by the legendary 5.5-litre Bi-Turbo V8, is a sublime blend of luxury, space, and brute force. It’s a vehicle that commands respect wherever it goes. But have you ever been behind the wheel, felt that immense wave of torque, and had the feeling that deep down, this powerhouse of an engine is capable of so much more? That AMG built it with a whole other level of performance […]
- [MERCEDES GLC63 / GLC63S ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-glc63-glc63s-ecu-remap/): Custom Remap for the Mercedes-AMG GLC 63 & GLC 63S (X253) at MSL Performance   Let’s be honest, you already own the ultimate all-rounder. The GLC 63 is a masterstroke of engineering, blending SUV practicality with the heart of a muscle car – the formidable 4.0-litre Bi-Turbo V8. It’s the perfect one-car solution. But have you ever been behind the wheel, felt that surge of V8 power, and had the feeling that deep down, the engineers had to dial it back? That there’s a sharper, more aggressive performance SUV waiting to be unleashed? You’re right. There is. Here at MSL […]
- [MERCEDES G63 4.0L ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-g63-4-0l-ecu-remap/): Custom Remap for the Mercedes-AMG G63 (W463A 4.0L Bi-Turbo) at MSL Performance   Let’s be honest, you already own the definitive modern icon. The latest G63 is a masterpiece, blending timeless, rugged design with cutting-edge technology and the formidable 4.0-litre Bi-Turbo V8. It is, without question, the king of the road. But have you ever been behind the wheel, felt that explosive power, and sensed that deep down, AMG’s engineers built this engine with even more performance in reserve? A sharper throttle, a more savage surge of torque, a whole new level of authority waiting to be uncaged? You’re right. […]
- [MERCEDES G63 W463 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-g63-w463-ecu-remap/): Custom Remap for the Mercedes-AMG G63 (W463 5.5 Bi-Turbo) at MSL Performance   Let’s be honest, you already own an icon. The G63 AMG is the undisputed king of the road, a rolling fortress with a thunderous 5.5-litre Bi-Turbo V8 heart. It has more presence and character than almost anything else. But have you ever been behind the wheel, felt that immense power, and thought that deep down, it could be even more… commanding? More responsive, more aggressive, a whole lot more potent? You’re right. It can be. Here at MSL Performance in Birmingham, we are experts in taming and […]
- [MERCEDES E63 / E63S W213 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-e63-e63s-w213-ecu-remap/): Custom Remap for the Mercedes-AMG E63 & E63S (W213) at MSL Performance **If your vehicle is registered from mid 2021 onwards then your ECU has a strong chance of being locked from factory, if this is the case then we would need to send your ECU for unlocking prior to any tuning, please refer to the following link: ECU UNLOCKING** Let’s be honest, you already own the pinnacle of the super-saloon world. The W213 E63S is a technological masterpiece, a blend of executive luxury and all-wheel-drive supercar performance that defies physics. But have you ever planted your foot, felt that […]
- [MERCEDES E63 / E63S W212 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-e63-e63s-w212-ecu-remap/): Custom Remap for the Mercedes-AMG E63 & E63S (W212 5.5 Bi-Turbo) at MSL Performance   Let’s be honest, you already own a brute in a suit. The W212 E63, powered by the legendary 5.5-litre Bi-Turbo V8, is the definitive executive missile – a luxurious saloon with a sledgehammer hidden under the bonnet. But have you ever planted your foot, felt that immense wave of torque, and had the feeling that deep down, this engine is capable of so much more? That AMG built it with a whole other level of ferocity just waiting to be unleashed? You’re right. There is. […]
- [MERCEDES C43 W205 / GLC43 X253 FL ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-c43-w205-fl-ecu-remap/): Custom Remap for the Mercedes-AMG C43 (W205 Facelift) at MSL Performance   Let’s be honest, you already own a superb all-around performance car. The facelift C43 AMG sharpened the recipe, blending potent BiTurbo V6 power with updated tech and aggressive styling. It’s a machine that excels at everything. But have you ever planted your foot and felt that, deep down, the engineers were just holding it back from its true potential? A little more urgency, a stronger pull through the gears, a whole new level of excitement waiting to be unleashed? You’re right. There is. And here at MSL Performance […]
- [MERCEDES C43 W205 / GLC43 X253 / GLE43 W166 PFL ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-c43-w205-pfl-ecu-remap/): Custom Remap for the Mercedes-AMG C43 (Pre-Facelift) at MSL Performance   Let’s be honest, you already own a fantastic car. The C43 is the sweet spot in the AMG lineup, delivering thrilling BiTurbo V6 performance and all-weather capability in a stylish package. But have you ever planted your foot and felt that, deep down, this potent V6 engine has more to give? A sharper response, a more aggressive pull, a whole new level of excitement waiting to be unleashed? You’re right. There is. And here at MSL Performance in Birmingham, we know exactly how to unlock it. We’re not about […]
- [MERCEDES C63 / C63S W205 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-c63-c63s-w205-ecu-remap/): Custom Remap for the Mercedes-AMG C63 & C63S (W205) at MSL Performance   Let’s be honest, you already own an absolute weapon. The W205 C63, with its formidable 4.0-litre BiTurbo V8, is a masterclass in modern muscle, blending luxury with brutal performance. But have you ever planted your foot, felt that wave of turbocharged torque, and sensed that deep down, AMG’s engineers were forced to leave some performance on the table? A little more boost, a more savage response, a whole new level of supercar-rivalling speed waiting to be unleashed? You’re right. There is. Here at MSL Performance in Birmingham, […]
- [MERCEDES C63 W204 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-c63-w204-ecu-remap/): Custom Remap for the Mercedes-AMG C63 (W204) at MSL Performance   Let’s be honest, you already own a legend. The W204 C63 is a modern classic, celebrated for one of the greatest V8 engines ever built: the mighty 6.2-litre M156. It’s a masterpiece of thunderous noise and raw, naturally aspirated power. But have you ever planted your foot and felt that, deep down, AMG’s engineers were holding it back just a little? A little more throttle response, a bit more urgency in the top end, a whole lot more of that V8 fury waiting to be unleashed? You’re right. There […]
- [MERCEDES A45S W177 / CLA45S C118 / GLA45S H247 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-a45s-w177-cla45s-c118-gla45s-h247-ecu-remap/): Custom Remap for the Mercedes-AMG A45S, CLA45S & GLA45S at MSL Performance **If your vehicle is registered from mid 2021 onwards then your ECU has a strong chance of being locked from factory, if this is the case then we would need to send the ECU for unlocking prior to any tuning, please refer to the following link: ECU UNLOCKING**   Let’s be honest, you already own a phenomenal car. The A45S and its siblings are hyper-hatch royalty right from the factory, an absolute marvel of engineering and a thrill to command. But have you ever planted your foot, felt […]
- [MERCEDES A35 W177 / CLA35 C118 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-a35-w177-cla35-c118-ecu-remap/): Custom Remap for the Mercedes-AMG A35 at MSL Performance **If your vehicle is registered from mid 2021 onwards then your ECU has a strong chance of being locked from factory, if this is the case then we would need to send your ECU for unlocking prior to any tuning, please refer to the following link: ECU UNLOCKING**   Let’s be honest, you already own a brilliant car. The A35 is the perfect entry into the world of AMG – sharp, agile, and a genuine thrill to drive. But have you ever planted your foot and felt that, deep down, Mercedes-Benz […]
- [Genuine AMG Spark plug change A45 W176 / CLA45 C117 / GLA45 X156](https://www.mslperformance.co.uk/product/genuine-amg-spark-plug-change-a45-w176-cla45-c117-gla45-x156/): Genuine AMG Spark Plug Service at MSL Performance Think about that moment you hit the throttle in your AMG. That instant, crisp response. The smooth, ferocious surge of power that follows. It’s an incredible feeling, and it all starts with a single, tiny, and often-forgotten component: the spark plug. Think of it as the lightning strike that ignites the thunderstorm in each cylinder. A small part with a mighty job. When your spark plugs are fresh, that ignition is perfect, giving you the flawless performance you love. But over thousands of miles of explosive work, they begin to tire. That […]
- [Genuine AMG Oil Service](https://www.mslperformance.co.uk/product/1272/): Genuine AMG Oil Service at MSL Performance The engine in your AMG isn’t just a collection of mechanical parts; it’s the heart and soul of your car. Hand-built with passion and precision, it’s what creates that sound, that feeling, that unforgettable performance every time you turn the key. And just like any world-class athlete, it needs the absolute best care to keep it performing at its peak. An oil service might seem like a routine task, but for an AMG, it’s one of the most critical things you can do. This is where cutting corners simply isn’t an option. It’s […]
- [MERCEDES A45 W176 / CLA45 C117 / GLA45 X156 ECU REMAP](https://www.mslperformance.co.uk/product/mercedes-a45-w176-cla45-c117-gla45-x156-ecu-remap/): Custom Remap for the Mercedes-AMG A45, GLA45 & CLA45 at MSL Performance Let’s be honest, you already own a fantastic car. The A45 and its siblings are pocket rockets from the factory, an absolute blast to drive. But have you ever planted your foot and felt that, deep down, there’s just… more? A little more kick, a bit more urgency, a whole lot more excitement waiting to be unleashed? You’re right. There is. And here at MSL Performance in Birmingham, we know exactly how to find it. We’re not about generic, one-size-fits-all tunes that get emailed around. We’re about rolling […]
- [Pipercross Performance Air Filter](https://www.mslperformance.co.uk/product/pipercross-performance-air-filter/): Pipercross Performance Air Filter for Mercedes A45 / CLA45 / GLA45 AMG – PX1974   (Product Code: PX1974)   Unleash the True Voice of Your AMG.   You didn’t choose the Mercedes-AMG A45 for a quiet, sensible drive. You chose it for its handcrafted, turbocharged heart and explosive performance. But what if you could make it even better with one simple, effective upgrade? The standard paper air filter in your AMG does its job, but it’s designed for economy and low noise. It’s the bottleneck holding back your engine’s true potential, restricting airflow and muffling the incredible induction sound that’s […]


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