MERCEDES C43 W205 / GLC43 X253 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 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 up our sleeves and giving your C43 the personal attention it deserves. We craft a completely custom map, specifically for your engine and its factory software, to deliver a perfect fit that unlocks incredible performance, safely.

Find Your Perfect Level of Power

Every driver is different. That’s why we’ve developed a clear tuning path for your facelift C43, from a significant enhancement to a more aggressive transformation.

Stage 1: The “True AMG Experience” Tune

This is for you if you love your car’s sophisticated balance but want to inject a serious dose of AMG excitement. On standard hardware, we meticulously recalibrate the engine’s control unit to unlock a whole new level of energy. The throttle response becomes sharper, and the car pulls with a newfound authority across the rev range, delivering that forceful shove you’ve been looking for. It’s your C43, but with the performance dialled up to match its aggressive looks.

• The Result: Up to 425 bhp and an impressive 50 lb-ft of additional torque.
• What you need: Just your car! No extra parts are required.

Stage 2: For When You Want to Make a Statement

Ready to really liven things up? Stage 2 is where we unlock the V6’s true voice and performance. By freeing up the exhaust flow with high-flow downpipes, we can get more aggressive with our custom tune. This allows the twin turbos to spool more freely and operate more efficiently, resulting in a harder, more sustained pull right to the redline. The power delivery is more intense, and the exhaust note becomes deeper and more purposeful, giving you that authentic performance sound to match the power.

• The Result: Up to the 435-445 bhp mark.
• What you need: Downpipes (decat) are required to let those turbos breathe.

So, Why Come to MSL?

Because we’re just as passionate about your car as you are. We believe tuning is an art form, and we take pride in every single car that rolls out of our workshop. When you bring your C43 to us, you’re not just getting a remap; you’re getting the full MSL experience – honest advice, expert workmanship, and the peace of mind that your pride and joy is in the safest hands.

Ready to feel the difference? Give us a call or drop by our workshop here in Birmingham. We’d love to have a chat about your car and figure out the perfect plan to unleash its true potential.