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April 2024 by Adam kainz
Had my car retuned here because P&L motorsports doesn’t know what they are doing. Harold fixed P&Ls mistake and my car is running beautifully. Harold is very knowledgeable and knows what he’s doing and doesn’t beat around the bush. Definitely recommend dynosource performance for all your tuning needs!
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March 2024 by Kent Davies
Put headers on my wife's trail blazer SS and Harold was able to add about 40 horse (350 wheels) plus way better drivability compared to stock. Hope to be back after more upgrades.
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September 2023 by Cory battles
Over priced and takes forever then surprises you with a high bill that wasn't communicated at all. Also paints your car parts green because he wants to and charges you for it
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August 2023 by Jakobi Gabriel
Harold and his guys did some turbo work for me on very short notice w a good turn around time. His shop outputs some really nice work
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August 2023 by joe ventura
I have worked with Harlod for over 20 years with all of my performance needs. Everything from 4 cylinder to big block applications. He is my go to for anything performance related. I have always and will continue to consult him and use his services. Top notch and very knowledgeable.
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August 2023 by Rebecca Burgess
Reliable and great service. Highly recommend for all your auto tune up needs. Very happy with the service I received.Service: Auto engine tuning
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August 2023 by Rence Estrada
From the small things to big motor builds I can’t complain about the work that Dynosource has done. Just remember you get what you pay for.
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August 2023 by Candace Taylor
Stellar customer service, attentive, and professional work. Harold and the crew go out of their way to serve their customer base. Appreciate it!
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August 2023 by Jason Riforgiato
Harold and Dyno source thank you for taking the time to go over my monster of a build and delivering my what was a dream at one point is now burning Asphalt.Service: Auto engine tuning
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August 2023 by Jared Todd
Harold may be goofy but he's honest and knows his stuff!Services: Transmission
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July 2023 by Waseem Jaban
RUN AWAY! My brother and I took our car there to have it Dynoed, and we were on a time crunch. The owner said we need bunch of part for the build to be completed and gave us a verbal quote of little over $9000, we thought it was high, but we figured you get what you pay for.The engine blew up on the dyno, and the owner wanted $4000 more over the original $9000 he quoted us over the phone. He refused to give us a written quote, and he held the car as collateral.We are going to report him to the city of Anitoch for unlawful business practices and file a lawsuit.I hardly ever write negative reviews, but I want to help others save them the headache and money.STAY AWAY!
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April 2023 by Michael Freeman
just kruzing what was available, did not purchase any services!!! harrassed for input so here you go !!
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January 2023 by David C.
Ok so this review starts in July of 2020 . I took my sons car to get a supercharger and full exhaust put in a 2020 Toyota GT86. After calling around and reading reviews, I chose this shop. Working with them we decided on sprintex SC and invidia exhaust and headers. All parts were "plug and play" we agreed to do the installation. Because my son was in college I wanted tuned to high octane pump gas as I didn't want my son to run out of gas because he couldn't find E-85 or a racing fuel, plus we explained that this would be a daily driver. After waiting till the end of August we finally got the car back. It was "bucking" within in a week. I took the car back because the engine light was on and found the plugs burned out. Their suggestion was racing plugs, put them in and the car that was already bucking only got worse. When called for help he said he fired the old mechanics for not doing work. And claimed that we wanted E-85. I finally took it( had it towed as it continued to now die) to my home in Kentucky and had a shop, two shops confirm the ECU was not the correct one for the car/tune. When called back to find what ECU/tune was used we were told not to call ever again. We paid over 12 grand and got shafted. Do not use this place for anything. They will destroy your car. Will be getting an attorney after all new bills are in and finalized to try and recoup our losses.
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November 2022 by Marcus Raymond
If you want your car messed up then go here. They welded the high flow catalytic converters to the headers and caused multiple exhaust leaks. After confronting them and contacting 3 different times to repair the vehicle and willing to pay they refused to send me any quotes. I had another buisness fix the poor work this place produced.
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August 2021 by B N
I've been working with Harold (and Tristan) on my R32 GTR for years. I can't recommend this place enough. Harold, and everybody involved there, is like another family to me. Got me across the country twice in my car. Soon to be a third time this year. Really looking forward to having my car there again.Services: General repairs & maintenance
