Description
Fabspeed XperTune Performance Software for the 955 Cayenne Turbo and Turbo S recalibrates the twin-turbo 4.5L V8 for more horsepower, torque, and sharper response while preserving smooth, factory-like drivability and reliability. Using the included handheld through the OBD-II port, it eliminates the need for bench flashing and ECU removal by optimizing sensor inputs and air/fuel ratios via a simple flash.






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