Audi RS7 4.0T GIAC Performance ECU Software UpgradeGIAC performance software helps you extract the maximum potential from your RS7 4. 0T. Power gains have been measured at: 82 wheel horsepower and 130 wheel torque on 91 octane 133 wheel horsepower and 132 wheel torque on 100 octane Estimated crankshaft power output of 658 horsepower and 672 lb. ft. of torque on 91 octane Estimated crankshaft power output of 719 horsepower and 674 lb. ft. of torque on 100 octane GIAC numbers are measured on a Mustang