I have no idea what their workmanship is like, I never made it inside the place. I called, while at work, twice with no answer (11am), that's fine, maybe their in the shop. Left a message with no return call. After 2 hours of waiting, I call again, this time some hillbilly answers rudely, "hello!". I reply, "is this katy muffler shop?". He replies "ugh yeah!. I say "maybe you should say that when people call you." and hang up. 1 minute later, this bumbling retard calls me back asking me if I have a f'ing problem...to wich I reply "yeah you should have customer service lessons." Wrong guy...guy I will be writing bad reviews wherever i can and telling everyone within ear-shot to avoid this place like the plague. You cannot expect to get new customers from phone calls, if this is the way you treat people.