Mercedes A45 AMG Remap

The Mercedes A45 AMG S produces a factory 421bhp from a 2.0-litre engine - the highest specific output of any production four-cylinder engine. Even at this level, ECU remapping still unlocks further performance: a Stage 1 remap takes the A45 S beyond 480bhp, making it one of the fastest front-biased hot hatches on the road. AutoCleanse provides A45 AMG remapping in Devon from our Totnes workshop.

Diagnostic check included
Mobile service available across Devon
Safe, proven limits

Performance Gains

Mercedes A45 AMG Engine Options

2.0T M139 387 (A45, W177)

Power (BHP)
387bhp
450bhp
Torque (Nm)
480Nm
550Nm

2.0T M139 421 (A45 S, W177)

Power (BHP)
421bhp
485bhp
Torque (Nm)
500Nm
580Nm

Our Process

Professional ECU Tuning in Devon

Every remap we perform includes a full pre-tune diagnostic check to ensure your Mercedes is healthy before we start. We don't flash generic files - we use safe, proven calibrations tailored to your engine's specific hardware.

Full initial OBD diagnostic scan
Battery stabilization during flash
Safe limits for engine and gearbox
Post-remap test drive and data logging
Mobile service available across Devon

Mobile Remapping Available

We cover the entirety of Devon. We can remap your Mercedes A45 AMG at your home, workplace, or driveway, providing the same high-quality service as you'd receive in our workshop.

FAQ

Mercedes A45 AMG Remapping Questions

Ready to upgrade?

Transform Your Mercedes Today.

Book your A45 in for a Stage 1 ECU remap. Choose between a workshop visit or a mobile appointment across Devon.

Safe, tested calibrations for long-term reliability