Welcome to Engine Power Systems

We are a leader in advanced EFI engine innovation. From cutting-edge camshaft and valvetrain development to superior tuning of EFI computers, Engine Power Systems is your one stop shop. EPS is owned by Geoff Skinner, co-founder of Thunder Racing. During his 13 years at Thunder, Geoff managed the engine shop, developed their extensive line of custom camshafts, and was the chief tuner of EFI applications.
Engine Power Systems was created with the high tech racer in mind. Never settling for the status quo, EPS is constantly creating new engine combinations that raise the standard for extracting the most power while using the least amount of fuel. It’s all in the combination of parts and the calibration behind it. With an in-house chassis dyno and software to accommodate nearly all brands of operating systems, EPS can tune your vehicle to perfection.

Custom PCM Tuning for Your:

  • 2010 Camaro SS
  • 1997 & up Corvette
  • 2004 & up Cadillac CTS-V
  • 1993 to 2002 Camaro or Firebird (GM F-Body)
  • 2008 & up Pontiac G8 GT
  • 2004 to 2006 Pontiac GTO
  • 2006 & up Trailblazer SS
  • 1999 & up GM Truck
  • Chevrolet SSR
  • 1994 to 1996 Impala SS
  • and more!
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Latest Products
LT1 Cam
LT1 Cam


EPS Tshirt
EPS Tshirt