PSI (Performance Systems Integration)

Call Directions Website

PSI (Performance Systems Integration) Standalone wiring harnesses and Conversion Parts for GM LS LT engines
Made in USA! 🇺🇸

We are an aftermarket engine harness and conversion parts manufacturer and retailer.

09/30/2026

Bill’s WILD corvette features a C5/C6/C7 chassis combo, LT4 power, an 8L90, and a PSI standalone harness that makes it all come together. Absolutely crazy build and we were super glad to have it on display at LS Fest East 2026

Big congratulations to Jeff’s killer squarebody build and his PSI Show & Shine Award at LS Fest East 2026! Powered by an...
09/21/2026

Big congratulations to Jeff’s killer squarebody build and his PSI Show & Shine Award at LS Fest East 2026! Powered by an LT4 backed by a 10 speed, this truck brings classic square body style together with modern LS performance, keeping it running right with a PSI Gen 5 controller kit! Beautiful build! Congratulations!

09/14/2026

Thank you to everyone who made LS Fest East 2026 an incredible event! We look forward to this show every year thanks to the people, the racing, and the impressive builds everywhere you look! Stay tuned for the content from this weekend and thank you to everyone who stopped by!

09/13/2026

Today is your LAST CHANCE to stop by the PSI booth at LS Fest East!!!! Make sure to drop in, grab some swag, talk swaps with the team, and get a good look at the displays!!

09/12/2026

Stop by the PSI booth for day two of Holley LS Fest east! We’ve got exclusive show deals, customer builds, wiring up close and personal, and a team of people who want to hear about YOUR swap questions!

Today we honor the memory of the lives lost on 9/11 as well as the resilience, unity, and courage that define this day. ...
09/11/2026

Today we honor the memory of the lives lost on 9/11 as well as the resilience, unity, and courage that define this day. We will never forget. 🇺🇸

Address

2029 Route 88
Brick Township, NJ
08724

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+17322768589

Website

Alerts

Be the first to know and let us send you an email when PSI (Performance Systems Integration) posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category