Porsche 981 Cayman GT4 XperTune Performance Software Electrical Expect a slight increase in

Expect a slight increase in turbo sound as well - which can be enhanced even further at any point with the separate addition of our Sport Catalytic Converter

This allows the turbos to work more with less restriction and reduce the waste-gate duty cycles

With PSE on and the valves open it turns the 4

Performance ECU software upgrade improves horsepower

Porsche 981 Cayman GT4 XperTune Performance Software Electrical Expect a slight increase inAchieve maximum power gains and driveability without sacrificing reliability. Fabspeed Motorsport offers an alternative tuning method for vehicles equipped with ECU's that traditionally required bench flashing. No longer do you need to remove your ECU and mail it in for a tune. The Handheld device interfaces with the OBD II port on your vehicle and your computer to complete the tuning process. Simply flash your 981 GT4 with a Fabspeed ECU Tune