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February 2023 by ONETAKEAV
BEST CUSTOMER SERVICE. They answer all my dumb questions and quickly. So glad I purchased my harness from PSI.
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April 2022 by Reid Butler
I purchased a wiring harness from PSI for my 2016 Gen V LT L83 swap into an old Military Humvee. I went ahead and purchased the wiring harness, 02s, pedal, MAF, and ECU with tune. It was worth every cent. They literally lived up to there "Plug it up and fire it up" slogan. The quality of the harness was OEM, the connectors are factory connections and come complete with safety snaps. After my install i had some concerns with my swap because some parameter had changed and the engine was behaving undesirably. I did all the necessary testing and called PSI to speak with the tech guy, Gary, after sharing my test results we were able to figure out my issues and he even sent me the procedures I needed to complete to resolve my issue. Will purchase for my next swap. Thanks so much guys!
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January 2022 by Chris Henry
After having two harnesses built with psi and having to rework several mistakes I brought it to their attention via emails that were never responded to. My most recent and final dealing with them was the purchase and refund of a tap shift module for an 8l90e. The module was purchased for $665 and $501 was refunded to my card. The box was only ever opened to read the instructions. I wasn’t told by tech that I was literally purchasing a Bluetooth tap shift module for $600+ dollars. Somehow, that shift module that never left the box got a scratch on it that was noticed by their returns team. These guys are only in it for the money. Their harnesses go for top dollar while having less quality and features than other better harnesses costing less. Don’t waste your time like I did!
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September 2021 by Jeff Robinson
Says shipping 3-5 days. Remove false advertising from your website!!!! Never a good way to get business bye lying to customers. And you send a email receipt with every order, it would be just as easy to let a customer know that you are backed up 6-8 weeks.
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May 2021 by Zach Sheffield
took my $700 on april 30th for a harness I was told would ship within 2-3 days needed time to package it up.
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April 2021 by John Wojdak
My LS swap is a LS2 but with LS3 heads and injectors. Harness came with all the correct connectors. Tech support is super responsive and helpful.
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October 2020 by Terrance Smith
I stumbled across their website by chance, boy am I happy that happened. I had questions about LS swaps, mind you, I jave not purchased one thing from them. I sent a message to them.on Saturday, a few hours later I had a response. I would message them again and they responded, over the weekend. I highly recommend their service.
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October 2020 by John Raspo
I called PSI the first time. A very knowledgeable person answered. He's more than willing to talk about my LSA wiring harness that I would like to purchases. Was very informative and possibly saveed me $700 not having to buy a controller for th 6L80. NOT TO MENTION $400 saved vs the gm wire harness. He told me their wiring kit with ECM and pedal can be program to work the internal controller of the 6 L 80. All I have to do is remove the controller ship to them and they will program it with purchase of the LSA wiring kit.
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September 2020 by Jim Holschuh
Buyer beware!!! PSI had the plug to the ECM wired incorrectly and the wire coming from the intake was not functional. After 11 hours of diagnosing and repairing at shop rate of $62.00/hour the harness is now functional. PSI refused to reimburse us for the expense of correcting their mistakes. I would look for a company with better quality and customer service in the future. Go buy a harness somewhere else!! RE: engine harness for a LS2 with a 6L80 trans.
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April 2020 by Steve Gray
They sent the wrong harness delaying my projec, sent messages try the connect with them online chat it always says nobody is there. Did not take the long to take my money
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January 2020 by Kevin Dinsmore
I have bought 5 harnesses from PSI, Great service, and great products
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October 2019 by Melody Kotrba
I purchased the LS swap with gto petal stand alone harness for my Ls2 swap on my 86 Camaro. It was nicely done. Layed our great. Everything was clean and loomed well. Would definitely recommend.
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October 2019 by Pete Geoghegan
While at the recent 2019 LS Fest in Bowling Green, KY, my mission was to find out some crucial information about an LS swap that I was planning for my El Camino. I first wanted to know who made the best wiring kit for this type of swap. After speaking to the first 4-5 people who had done this swap, they ALL said PSI Conversions out of NJ. I then walked to the Manufacturers Midway and spoke to Bobby Y at PSI Conversions about my project. He could not have been nicer, he answered all my questions and options (and there were a lot) but the part that sold me was the "NO Pressure" to buy their kit. I liked the quality of the harness and easy to read instructions. I was sold.
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October 2019 by R Y
Great service experience with all the Sales guys there. Got to meet them in person at LS Fest. I've been running a harness 1014 and it has endured lots of time and abuse.
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September 2019 by Jerry Wright
Great products!! Excellent customer service!!! Even helped me figure out a problem I created (crank sensor wasn’t plugged in all the way). Thanks!!!
