GIAC Stage 1 tuning adds horsepower, torque and more throttle response throughout the power band. This calibration is compatible with vehicles that have no other upgrades to basic “bolt-ons”. Addition of a BMC high-flow air filter and exhaust system will increase overall performance.
Tuning for the 991 Carrera/S/GTS requires accessing the vehicle’s OBD-II port via laptop. On-site tuning at your home is available, based on location.
991 Carrera GIAC Tuned: 365 HP / 300 LB-FT OEM: 350 HP / 288 LB-FT DIFF: +15 HP / +12 LB-FT
991 Carrera S GIAC Tuned: 415 HP / 340 LB-FT OEM: 400 HP / 325 LB-FT DIFF: +15 HP / +15 LB-FT
991 Carrera GTS GIAC Tuned: 440 HP / 337 LB-FT OEM: 430 HP / 325 LB-FT DIFF: +10 HP / +12 LB-FT
HP and Torque figures are average engine estimates derived from wheel power and acceleration testing. Figures based on 91 octane fuel. Use 93 octane when available for optimum results.