Welcome to

Peformance Systems Integration!

We specialize in developing and manufacturing kits and components for retrofitting vehicles with electronic fuel injected (EFI) engines. Most notably GM LS, Vortec, and LT1/LT4 platforms. We offer a full range of products including Standalone Wiring Harnesses, replacement GM Connector Pigtails, PCM Programming and much more! Free technical advice and documentation is also available, if you don’t see it, just ask!

Check out some new in-house projects we have been working on, Click here