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Welcome to Performance Systems Integration!
We
specialize in the design and manufacture of Standalone Wiring Harnesses
for GM Gen II, III, and IV LS based engines and transmissions. These
harnesses include the Gen II LT1/LT4, Gen III (24x) LS1/LS6 and Vortec
Truck Engines as well as Gen IV (58x) LS2, LS3 and LS7 Engines. In
addition to wiring harnesses, you will find other components and kits
for retrofitting
older vehicles with these powertrains including PCM programming, Fuel
Pump Kits, Engine Sensors, Extension Harnesses, Replacement GM connector
pigtails and a complete line of hardware to complete your conversion
needs!
PSI has a growing reputation for Outstanding Customer Service, Superior design and Exceptional quality. Please check out our Online Store to find everything you need for a seamless conversion and one stop shopping.
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PSI has been receiving a lot of customer installation pictures and videos. Check them out on our Facebook page HERE.
- Welcome to our new look. We now have a FEATURED PRODUCT Section to allow for easy viewing of new offerings from PSI. Additionally, you will find NEWS on what is going on with PSI, Events, Sales, and much, much more. Please check back often and Thank you for CHOOSING PSI!
LS1 STANDALONE HARNESS W/4L60E, P/N HAR-1012
Resellers of:
