Rennsport Performance - Race Inspired Road Cars







GIAC Performance Software Tuning

GMG is Southern California's Premier GIAC Flash Center and GMG have partnered with GIAC to provide optimal software tuning for your Porsche vehicle. GIAC is an engineering company that has over 17-years experience tuning automobiles.  They are known for creating "factory smooth" performance software with exceptional power and reliability.  GIAC software replaces the standard software in your Porsche's engine control unit and is programmed to adjust ignition timing, fuel delivery, fuel metering, boost settings, rev limiters, and/or speed limiters to optimize performance. 


GIAC performance-tuned programs are designed specifically for each GMG World Challenge performance vehicle and are designed to increase the engine's torque and HP without sacrificing smooth drivability or reliability.  GIAC performance tuning software is the gold-standard in the industry.