Porsche 996 Turbo S / GT2 / X50 K24 GIAC Performance ECU Software UpgradeGIAC performance software helps you extract the maximum potential from your Porsche 996 Turbo. Power gains were measured at: 58 wheel horsepower and 82 wheel torque on 91 octane Estimated crankshaft power output of 594 horsepower and 602 lb. ft. of torque 7. 40 60 130 mph Hardware requirements: Turboback exhaust highly recommended For even more power from your K24 turbos, take a look at the Forge Motorsport wastegate actuator upgrade. For the same