Audi TT RS 2.5 TFSI GIAC Stage 1 Performance ECU Software UpgradeGIAC performance software helps you extract the maximum potential from your Audi TT RS. Power gains have been measured at: 30 wheel horsepower and 59 wheel torque on 91 octane 69 wheel horsepower and 70 wheel torque on 100 octane These numbers were measured on a Mustang MD 500 dyno to all four wheels. Don't be fooled by tuners who only dyno to the front wheels. This practice does not produce numbers that are indicative of what you will experience in