About DynoSource Performance

DynoSource Performance is a reputable shop for car tuning needs. Harold, a knowledgeable and skilled mechanic, provides top-notch service, fixing mistakes made by other shops and improving car performance. He has expertise in a range of applications, from 4-cylinder to big block, and offers custom upgrades, such as adding 40 horsepower to a Trail Blazer SS, with noticeable improvements in drivability.

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Reviews for DynoSource Performance

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Apr 2026
I called and they were very helpful with getting my car to run good again. Just over the phone. He was able to give me The advice that I could not find online about a very specific issue and he was very knowledgeable. 10 out of 10 would recommend to a friend.
Sep 2024
Harold was very efficient in getting me in way before I thought possible. Tuned and swapped out bad injectors for me. Car runs TOP NOTCH now thanks to DynoSource Performance. Would not hesitate to take next project to them.
Jul 2024
They are honest, reliable and operate with integrity. Highly recommend for anyone looking for high performance mechanics!!! Harold is knowledgeable, professional, and very detailed. Bob is the best around, always goes above and beyond. Always pleased with the work they've done for me!!!