GMG specializes in the performance tuning of Porsche, Audi, and Ferrari automobiles. GMG works with today’s leading tuning equipment from worldwide automotive technology leaders.  We offer installation of performance-related parts and equipment plus we engineer, develop and manufacture our own line of performance products and wheels under the GMG World Challenge and LMS lines for Porsche , Audi and Ferrari vehicles.

GMG is a leading installer and tuner of standalone engine management systems from Motec and Link as well as AIM.  As a development partner with GIAC, we can go beyond the ECU reflashing offered by most shops to instead custom calibrate a software tune for your specific vehicle with your specific hardware.  GMG uses a state of the art chassis dynamometer housed in its own diagnostic studio with a controlled environment and proper airflow to simulate all road and race conditions. The Mustang 500SE 2WD and 4WD chassis dynamometer is housed in a sound proof room that flows over 100k CFM per minute.  The end result is a properly calibrated tune whether you are running a stock style ECU or a complete independent stand alone ECU.

GMG’s dyno diagnostic studio has been used by today’s leading automobile manufacturers and top tuners as well as aerospace and military corporations due to its real world performance figures and unsurpassed repeatability.


GMG offers a concierge service based around a driver’s particular needs for each tuning project. Our staff is trained and well-versed in the needs of a particular driver and his or her intended use of the vehicle.   Unlike most shops that sell parts out of a catalog, GMG brand specialists have firsthand experience with the products , services and results involved around each vehicle modification.   No two individuals are alike so no to vehicles are tuned the same way at GMG.