Back in October when time to renew my tags, my check engine light was on, and I failed Marta. As a single Mom, I panicked, started calling around, and stopped in 2 shops downtown, both FAD and Quick Muffler. I first went to FAD, and was told the converters on my SUV were bad about going out, they were nice, but I received great service at Quick Muffler, they electronically diagnosed my code for free, which was the O2 sensors, put my car on the rack, said my converters did not need repair, and welded a loose hanger. I got an estimate, they encouraged I research competition prices, and guaranteed if I found a better price they would beat it. I didn't. Very impressed.