Fabspeed California T XperTune Performance Software Style:Default Front - BMW-4 Series-F82/F83 M4

Front - BMW-4 Series-F82/F83 M4 (2015+)

We also used duralumin

Replaces the restrictive factory cats with high-performance 200-cell HJS sport catalytic converters for maximum performance and exotic car sound                                                         FEATURES: Fits all 458 Italia / Speciale vehicles (2010-2015)  Improves horsepower and torque by 24 whp and 20 ft-lbs Saves 11 lbs from the vehicle versus factory restrictive cats Constructed with Fabspeed-proprietary 200-cell HJS high-flowing catalytic converters using T304L stainless steel Simple bolt-on

This compound undoubtedly does a great job measuring up to the DTC series

5-1989 will require some additional modifications due to design change of outer vents**

Fabspeed California T XperTune Performance Software Style:Default Front - BMW-4 Series-F82/F83 M4Achieve 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