BMW 1M GIAC Stage 2 Performance ECU Software UpgradeGIAC performance software helps you extract the maximum potential from your BMW. Power gains have been measured at: 77 wheel horsepower and 40 wheel torque on 91 octane 96 wheel horsepower and 75 wheel torque on 100 octane Estimated crankshaft power output of 423 horsepower and 414 lb. ft. of torque on 91 octane Estimated crankshaft power output of 444 horsepower and 454 lb. ft. of torque on 100 octane Stage 2 hardware requirements: Intake Intercooler