My Pontiac Vibe was dying going up the hills on I-77 on trip through the area. Dave diagnosed a clogged catalytic converter via tapping a hole and measuring flow & code reader. I left the car at this shop and rented a car to continue my trip. Dave put on a new catalytic converter & O2 sensor on my Vibe the next day while I continued my trip in a rented vehicle. The trip ended up getting extended, so he stored my car inside (no added charge) and it was ready when I returned, with all emission codes fixed, and at about half cost of a GM dealer. Correct diagnosis & good job. Engine power restored in my old car. Thanks! read more