PSI (Performance Systems Integration)

PSI (Performance Systems Integration) Standalone wiring harnesses and Conversion Parts for GM LS LT engines
Made in USA! 🇺🇸
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We are an aftermarket engine harness and conversion parts manufacturer and retailer.

06/17/2026

PSI engine controller kits are built to make your LS or LT swap as clean, simple, and reliable as possible. 🔧🔥

Each kit is fully customizable, so you can choose exactly what you need: harnesses, pedals, O2 sensors, MAF components, ECM/TCM, and more, all designed to work seamlessly together. Whether you’re running an automatic or manual transmission, PSI has you covered with a standalone solution that takes the guesswork out of your swap.

From classic muscle to modern builds, our controller kits are engineered to get you wired up and fired up with confidence.

Ready to build your dream setup?
📞 732-276-8589 (M–F)
🌐 www.psiconversion.com

06/13/2026

Spend less time troubleshooting and more time driving. Get .

📞 732-276-8589 | ✉️ [email protected]

06/12/2026

Caught this 71’ Caprice build by over at LS Fest West and it is CLEAN 🔥

06/10/2026

We caught up with the owner of this awesome slammed ‘68 C10 utility bed to talk about the build, the story behind the license plate collection, and how this family project came together.

Powered by a 416 stroker and 8L90, this truck put down 578 horsepower to the wheels—and thanks to a PSI harness, it was wired, fired, and cruising in no time.

Save yourself the headaches and get it wired the right way the first time.

📞 732-276-8589 | ✉️ [email protected]

c10nationals

06/09/2026

The PSI Conversion Holley Terminator Harness is exactly what you need...

- Built with GM-spec, high-temperature TXL cross-linked polyethylene wire
-Terminals and connectors that meet or exceed OEM specifications
- Designed for cleaner installs, easier troubleshooting, and a more straightforward install

Got questions? Drop them in the comments or reach out to our team today!
📞732-276-8589 | 💻 [email protected]

06/05/2026

PSI is headed to Syracuse Nationals 2026!

The largest car show in the Northeast is back, bringing together incredible vehicles from across the U.S. and Canada at the New York State Fairgrounds.

Be sure to stop by the PSI booth and check out in person. We can’t wait to see you there!

wireitupandfireitup

06/04/2026

Some drag strip action from C10 Nationals! 🔥

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!

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

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