This tune is for the F3x BMW 428i/435i
Our in-house team of engineers is eager to ECU tune your platform. This ECU tune can make your already impressive 428/435i into a street monster. Increases in horsepower, torque and throttle response will leave you with a smile on your face. You will be wanting more every time you get behind the wheel!
Our expert team of technicians has vast knowledge working on the F3x. We have re-calibrated many of the factory ECU settings giving your F3x higher performance while still remaining daily drivable & street legal.
SMS offers stage one and stage two tunes for this vehicle. E85 tuning available upon request. Please contact your local SMS location for more details and dyno tuning options!!