PSI (Performance Systems Integration)

PSI (Performance Systems Integration) Standalone wiring harnesses and Conversion Parts for GM LS LT engines
Made in USA! 🇺🇸
(6)

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

06/03/2026

Always great to see and his 67’ C10 freshly 🔥

coachellavalleyc10s

06/02/2026

5 Reasons Why YOU Need a PSI Wiring Harness...

📞 732-276-8589 | 💻 [email protected]

06/01/2026

June 5–6 | Townsend, TN | Tail of the Dragon

If you’ve got a steering wheel, you’re invited. Porsche, Corvette, pickup truck, or daily driver—ALL vehicles are welcome.

Destination meets experience. See you at PTR!

05/31/2026

Always good catching up with Chris Baker and showing love to the people behind C10 Nationals. From Texas in 2018 to what it is today, it’s been awesome watching the event grow over the years.

PSI appreciates all the hard work that goes into making events like this happen. 👊🔥

05/29/2026

At PSI, we’re not just here to sell harnesses and tunes. We’re here to support your entire swap journey. Whether it’s a bad coil, clogged injector, MAF placement, or something else entirely, our tech support team is ready to help get you wired up and fired up. ⚡

Big thanks to Rob and the Square Body Syndicate crew. Always awesome seeing Smoke Box out doing its thing.

Wire it right. Choose PSI.
📞 732-276-8589 | 💻 [email protected]

05/28/2026

Down at C10 Nationals in Texas checking out some incredible builds with Cynthia from Pro Touring Texas 🔥

This stunning 1969 Pontiac Trans Am is getting the full Pro Touring Texas treatment:

✅ Roadster Shop Spec chassis
✅ LT4 power
✅ 6-speed manual
✅ Forgeline wheels
✅ Dakota Digital
✅ PSI wiring
✅ American Autowire
✅ Modern AC and all the details

The best part? The classic exterior stays true to its roots while everything underneath gets modern performance and drivability. 💪

Cynthia’s passion for these cars runs deep, inspired by her family’s GTO history, and this build is shaping up to be something truly special.

05/27/2026

🔧 The PSI Builder’s Kit

This harness was designed for the builders who want complete control over their wiring layout. With 15-foot labeled pigtails, pre-terminated sensor connectors, and a pre-made fuse/relay center, you can route everything exactly how you want it without chasing down connectors, tools, and wiring supplies.

Perfect for super custom installs, tucked engine bays, and unique routing setups where a standard harness might not fit your vision.

✔ Pre-terminated sensor connectors
✔ Wires labeled every 12 inches
✔ 15 ft of length for custom routing
✔ Pre-built fuse/relay center included

It takes a little more time than a standard harness, but the result is a clean, fully custom install built exactly for your project.

Wire it right. Choose PSI.
📞 732-276-8589 | 💻 [email protected]

05/26/2026

Tired of messy wiring and guessing games?

PSI harnesses are built to simplify your swap with clean layouts, labeled connections, and plug-and-play solutions designed to get your project running faster and looking better.

No matter the build, PSI helps take the headache out of wiring so you can focus on the fun part: getting it up and running.

Clean installs. Reliable performance. Real tech support when you need it.

Horsepower is cool. Reliable wiring is cooler. Choose PSI.
📞 732-276-8589 | 💻 [email protected]

05/23/2026

While this truck was featured in the PSI booth at C10 Nationals last weekend, we stopped by Eric’s shop and got to hear one of the best stories behind it. 😂

Back when this pickup was running around with its matching K5, both trucks had just won awards at Goodguys and were headed to the ceremony. Somewhere along the drive home, the driveshaft decided it had enough and exited the truck completely.

Apparently all that was left afterward had “142 MPH” written on it… though nobody seems to know why.

Eric said they hauled the truck back to the shop, pieced together another driveshaft, and still had it back at the show the next morning for the awards ceremony drive-through.

Some of the best truck stories start with “we were just driving home…” 😂

05/22/2026

Today we remember and honor of the brave men and women who have made the ultimate sacrifice for our freedom. We return to normal hours on Tuesday 5/26! Have a safe and happy Memorial Day Weekend 🇺🇸!

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