Founded in 1989 by J.R. Granatelli and now headquartered in Oxnard, California, GMS designs, engineers, distributes and installs after-market performance automotive parts and accessories. The Company's strong engineering background enables GMS to focus on designing and engineering computer based electronic components such as mass airflow sensors, computer tuners, flash tools, and diesel modules. The Company's products are available nationwide through most mail order programs, retailers, dealers and warehouse distributors. Operating out of a 42,000 facility, GMS is a California Corporation. GMS's innovative designs allow the Company to be the premier name in the market. GMS innovations include the first aftermarket F-body torque arm, the first and only calibrated 200 MPH speedometer for the aftermarket, the first silicone radiator hose kits and most importantly Granatelli was the first company to produce a 50 state legal centrifugal supercharger system and then the first to achieve 50 state legal status on their Novi-2000 supercharge which proved to produce an excess of 1000 horsepower. Today, GMS offers impressive performance innovations including the world's fastest and most sophisticated flash tool, the world's only S197 calibrated mass airflow sensor, the world's only 4th generation F-body 200MPH speedometer conversion and the world's most powerful S197 Mustang and C5 & C6 Corvette turbo systems. The Granatelli name has been associated with speed for more than seventy years. GMS spends countless hours performing engineering evaluations and precision testing to ensure its customers' innovative products and advanced automotive solutions. GMS helped establish the standards set forth by the California Air Resources Board (CARB) enabling the Company to secure approval for many companies in the aftermarket manufacturing forced induction systems, camshafts, exhaust systems, cylinder heads and mass airflow sensors.