Fabspeed California T XperTune Performance Software Suspension Simply flash your M3 with

Simply flash your M3 with a Fabspeed ECU Tune utilizing the included handheld tuner

Exhaust components constructed from premium T304L with a polished finish for maximum performance

With Sport mode activated burbles and backfires erupt in abundance on overrun

Significant increase in sports car sound and power throughout the RPM range

Fabspeed California T XperTune Performance Software Suspension Simply flash your M3 withAchieve maximum power gains without sacrificing drivability or reliability. Maps are available for completely stock cars and modded alike. Increase the power and drivability by optimizing the ECU. We've had ample time with California T's on our in house Dynojet to unlock extra power on both stock vehicles and optimize performance with Fabspeed exhaust components. Once we receive your ECU, our tuner bench flashes it with the upgraded ECU map and we