GIAC Stage 1 Plus 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 is performed in-house via laptop through your vehicle’s OBD-II port.

991.2 Turbo
GIAC Tuned: 606 HP / 589 LB-FT
OEM: 540 HP / 524 LB-FT
DIFF: +66 HP / +65 LB-FT

991.2 Turbo S
GIAC Tuned: 630 HP / 600 LB-FT
OEM: 572 HP / 553 LB-FT
DIFF: +58 HP / +47 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.