GIAC | 991 Turbo / Turbo S Stage 2+ Upgrades Available from GIAC!

991 Turbo / Turbo S Stage 2+ Upgrades Available from GIAC!

2015-11-30

GIAC Stage 2+ software is now available for 991 Turbo/Turbo S customers with a Champion Motorsport intercooler upgrade and upgraded turbo back exhaust system. This GIAC engine software calibration was developed with support from Champion Motorsport to maximize power gains at up to 126 horsepower and 169 ft. / lbs. of torque over stock at four wheels (91 octane fuel), while retaining reliability. Following extensive power tests on GIAC’s Mustang dynamometer, focus shifted to the street, strip and road course for stress testing. Though the fuel system is much larger on the 991 models, the turbochargers are smaller and less robust than those of its 997.2 predecessor. Because of this fact, GIAC was careful to retain all boost and temperature safeties. Removing these safeties in an effort to push power further could cause premature turbocharger failure. GIAC product development for this product has generated a balance of power and reliability that is unmatched by any other aftermarket tuning solution.

In addition to generating reliable power gains, GIAC calibrators were careful not to sacrifice drivability. Our engineers worked hard to make the Stage 2+ driving experience feel as smooth as, or smoother than, stock.

Software testing for this product was completed using proprietary logging equipment engineered for comprehensive DME access and ultra-high speed data acquisition. GIAC worked diligently with Champion Motorsport (CMS) to fine tune the software on their own vehicles, as well as on vehicles brought in-house to GIAC.

GIAC Stage 2+ software for 991 Turbo applications features:

properly recalibrated air/fuel ratios
improved throttle response for a drive-by-cable system feel
optimized torque control for smoother part throttle power control and faster shifting
raised speed limiters to factory redline in final drive gear
dramatic improvements in power under the curve, gaining as much as 126 - 145 horsepower and 149 – 169 ft. / lbs. of torque in some areas (91 – 104 octane fuel)
power gains over stock, stage 1 and stage 2 for both pump gas (91 & 93 octane) and 104 octane fuel
100% OBD2 port flash with no DME removal necessary.

GIAC’s Flashloader handheld switcher is available for this application, complete with the following switching options:

104 octane performance
Valet mode

Dynamometer test results from an MD-500 Mustang dyno are included here. The graph plots power tests (wheel HP and TQ) for a 2015 Porsche 991 Turbo equipped with a set of Champion Motorsport intercoolers and a GMG Racing World Challenge Race exhaust system. The red line denotes a completely stock Porsche 991 Turbo with OEM software, exhaust, intake and charge cooler, on 91 octane. The green line denotes the same Porsche 991 Turbo with GIAC software, Champion Motorsport intercoolers, GMG Racing WC exhaust, and a factory intake on 91 octane. The blue line denotes the same Porsche 991 Turbo with GIAC software, Champion Motorsport intercoolers, GMG Racing WC exhaust, and a factory intake on 104 octane.

2015 991 Turbo Raw All Wheel Horsepower: Stock vs. Stage 2+ 91 octane pump vs. Stage 2+ 104 octane race