The GIAC engine software for 991 Turbo S applications is OBDII port flashed and packs a punch with peak gains measured at 30 - 40 wheel horsepower and 30 -60 wheel torque. Drivability is designed to be as smooth as stock at idle and part load, but offer a big boost at full load. Software features include added boost, changes to fuel and timing, and higher torque limits. GIAC is the first tuner to offer 991 Turbo software as an OBDII port flash. Software testing for this product was completed both locally and remotely using proprietary logging equipment engineered for comprehensive DME access and data acquisition.