$1,499.00 Porsche 991 Carerra / 4 / 3.4L Stage 1 Performance ECU Tune Want to add even more Horsepower? Upgrade to Stage 2 ECU Tune. (Catless Application) Adds an approx. 30-40 additional Horsepower! Check the box below: Upgrade to Stage 2 + $399.00 Product price Additional options total: Order total: Porsche 991 Carerra / 4 / 3.4L Stage 1 Performance ECU Tune quantity — OR — Add to cart Category: Porsche 991 Description Description +35 Horsepower +30 Torque Performance ECU Tune Features Eliminate Top Speed Limiter Increased Throttle Response Optimized Fuel and Spark Optimized for 93 Octane Related products Porsche 991 GT3 3.8L Stage 1 Performance ECU Tune $2,199.00 Select Options Porsche 991 Turbo 3.8L DFI (2014+) Stage 1 Performance ECU Tune $2,499.00 Select Options Porsche 991 Turbo S 3.8L DFI (2014+) Stage 1 Performance ECU Tune $2,499.00 Select Options Porsche 991 Carerra S / 4S / GTS / 3.8L Stage 1 Performance ECU Tune $1,999.00 Select Options