The BMW M140i is already a powerful hot hatch, thanks to its turbocharged B58 engine and rear-wheel-drive layout. At our specialist tuning workshop in Slough, we take its performance to the next level with custom Stage 1 and Stage 2 ECU remapping. Our expert calibrations enhance power, torque, and throttle response while maintaining the engine’s smooth drivability and reliability.

Our Stage 1 ECU remap is the ideal upgrade for a stock M140i. By optimising boost control, fuelling, and ignition timing, we unlock impressive gains without the need for any hardware changes. The result is a sharper, faster, and more responsive car that still feels refined for everyday driving.

For drivers seeking even greater performance, our Stage 2 tuning combines our bespoke ECU software with carefully selected hardware upgrades such as a high-flow downpipe, uprated intercooler, and performance intake system. This setup improves airflow, cooling, and exhaust flow, enabling us to extract significantly more power from the B58 while ensuring safe, consistent performance on both road and track.