Mercedes-Benz A45 AMG Remap

Mercedes-Benz A45 AMG tuning overview

The Mercedes-Benz A45 AMG is a high-output AMG platform where heat management, gearbox behaviour and repeatable performance matter. The car should be checked carefully before increasing boost and torque.

Wraith Performance can review existing modifications, fault codes, intake temperatures and DCT/TCU behaviour before planning Stage 1, Stage 2 or higher-stage tuning.

Expected power gains

Figures are guide data. Final results depend on vehicle health, fuel, hardware, gearbox and dyno conditions.

Stage 1 tuning

Stage 1 tuning on the Mercedes-Benz A45 AMG can bring a strong lift, with guide figures around 410 bhp and 560 Nm. The calibration needs to keep power delivery clean and controlled rather than relying on a short-lived torque spike.

Because AMG engines are already highly stressed from factory, checks around plugs, fuel quality, temperature control and gearbox behaviour are important before tuning.

Stage 2 tuning

Stage 2 should be planned around cooling and airflow. Guide figures around 440 bhp and 620 Nm need the right supporting hardware and datalogging to confirm the car is happy under load.

Wraith Performance can advise on parts and legal use before hardware and software are combined.

For Stage 3 or larger hardware routes, guide data shows this platform can move beyond 520+ bhp, but that should be treated as a build discussion with hardware, fuel, gearbox and cooling agreed first.

Supporting mods

For this platform, the usual supporting route is: Intercooler, intake, legal exhaust hardware and TCU checks.. These parts help control heat, airflow and torque delivery rather than chasing a stage label for its own sake.

Wraith Performance can supply, fit and check supporting hardware where suitable. Road-compliant advice is used throughout; emissions delete work, MOT defeat devices and illegal road use requests are not supported.

Dyno tuning

Dyno testing gives a clearer view of how the Mercedes-Benz A45 AMG performs before and after tuning. The Dyno Dynamics 450DS can be used for power runs, datalogging and repeatable checks on suitable FWD and RWD vehicles.

Logs can highlight boost control, air temperature, ignition correction, fuelling, torque request and gearbox intervention where the vehicle supports those channels. That data helps separate a healthy tuning result from a car that needs mechanical attention.