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.

Photos

Add a Photo

View All Photos

Reviews for DynoSource Performance

Write a review

Apr 2024
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!
Mar 2024
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.
Aug 2023
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.

More Reviews

Hours

Monday: 9AM - 6PM
Tuesday: 9AM - 6PM
Wednesday: 9AM - 6PM
Thursday: 9AM - 6PM
Friday: 9AM - 6PM
Saturday: ClosedSunday: Closed

Tips

gender-neutral restrooms

Find More Pros in Antioch

TNT Auto Care

- 25521 IL-173, Antioch

Best Pros in Antioch, Illinois

Location

20009 W State Line Rd, Antioch

Directions Call Website Pricelist Suggest an Edit