ProTech Auto Systems (protechautosystems.com) has a 4.8 out of 5 rating on OK.one, based on 102 user reviews collected here. It is listed under Vehicles & Transportation and its reputation is excellent. Praise is nearly unanimous, with 94% rating it 4 stars or higher; The business has replied to 60% of negative reviews; 43 of them were added in the last 12 months. Last updated 2026-08-10.
Some friends recomended Protech to me years ago. Most of the guys that recommended Protech are pretty anal about their vehichles and who works on them and how they perform. I have no complaints at all. Yes i recomend Protech.
Was delivered on time just need to install and go from there.
It was easy to order the part I needed. Shortly after I placed the order, a tech from ProTech called me to confirm the order and to also instruct me as to what I needed to do after installing the part.
Very helpful, can't believe the fast delivery. FIRST CLASS PRODUCT!
ProTech had the best price by far (a few hundred dollars in some cases) for the PCM I needed for my Ford Explorer, and ProTech offered a fast delivery option. BTW, my Explorer had the oxygen sensor heater+EGR+purge valve malfunction syndrome, the symptom being engine stumbling and stalling at idle RPMs. If your vehicle has all these trouble codes at one time, it is likely the PCM that is failing. The PCM came ready to install, which was done per instructions. This fixed the problem after every other solution had been tried -- mainly replacing about 15 different parts and sensors with no improvement. NOTE: A new PCM will sometimes cause random trouble codes to appear for a while. Clear them and keep driving while your car "re-learns" the proper fuel/air ratio and other engine performance parameters. Give it a few days of driving before assuming that the replacement PCM is faulty.
this company sent me a defective product then charged me a restocking fee of $150. This is unacceptable
Hey Curtis. You were having the same problem with the vehicle's monitors because the ECU was never your problem to begin with. We charged you a programming fee for our trouble after you sent it back. We have since sold it to another customer and it worked fine. Thanks for taking the time to leave the review.
I had a fantastic experience with ProTech! Steven was incredibly helpful and he guided me to make sure I was ordering the correct ECM for my car and answered all my questions. He even followed up on shipping and provided excellent support throughout the entire process. Highly recommend!
Excellent service and Steven was a great help with the PCM for my 5.9 Dakota R/T. The PCM arrived on time and was a plug n play unit. The tune that was installed has my truck running better than ever. I am 100% satisfied with ProTech Auto Systems and would highly recommend them for your PCM needs
Thank You Very Much Guys. You are so very professional and everything done on the Time. You say you send it. I recommended to Everybody Thank You So Much.
Great people to talk with, and fast shipping. The new ECU made my truck have better throttle response at lower speeds.
Called to get information and the gentleman on the phone was very knowledgeable and informative. The computer for my Cadillac was ready when he said it would be. He shipped it free and received it in two days. I had the mechanics shop install it. I can’t say enough about the results the car never ran better. I’m extremely satisfied with the experience.
Great support and so far the PCM is working great with no issues.
They Came Through for Me, Where All Computer Resources couldn't. 2 Computers and Hours of Checking Circuits only to find Out it Was the Computer, Then They deducted 257.00 dollars from what I paid them. I Recommend Pro Tech I Will Use no Other Source at This Time THANK YOU P/S THE BEST PARTS IT RIGHT UP THE ROAD FROM ME (CLERMONT FL)
I have been using ProTech Auto Systems for a while now and never disappointed. Great products and great service!
I’m just waiting for the part to come in it was really professional over the phone but I waiting for my pcm to get here
I think you have it going on, very helpful on the phone, The part got me going and shipping was good also, Thanks
Received product as promised. Very good customer service! People who answer the phone are the people you wish to talk to.
Impeccable service.
I have a vehicle which is inoperable and they ship it by the USPO, which takes 5-7 days with no option for expedite service.
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