20009 W State Line Rd, Antioch, Illinois, 60002
DynoSource Performance is a polarizing shop. Many customers swear by Harold's expertise and tuning capabilities, noting significant performance gains and professional service. However, there are several intense negative reviews alleging poor communication, rude behavior, and issues with billing or repair quality. It seems to be a shop where you either have a great experience or a very frustrating one.
We analyze 72 public reviews for DynoSource Performance using our data models and filter out spam to highlight only authentic feedback.
Always insist on a written quote before starting any major work, and clarify all potential costs upfront to avoid surprises.
✓ What Works Well
✗ Areas to Improve
Harold is the best tuner around.
Communication is lacking.
Great results, but be careful with billing.