BMW M140/M240I Stage 1 ECU Tuning

Mac Tuning ECU Software designed for the B58 Powerplant has undergone meticulous development on the dyno and rigorous road testing. This results in a comprehensive tuning solution that delivers impressive increases in both horsepower and torque across the entire powerband, surpassing expectations for drivability. Importantly, this enhancement is achieved without compromising the expected reliability.

Applies to the following variants: F20/F40

*Stage 2 ECU Software only, Does not include upgraded parts