I have had my catted bassani x pipe for 5 months now. my check engine light came on the other day so i took the car to the dealer to check it out...im still under warranty. the dealer said the code is for the catalytic converter. He said one of the cats is bad. Now I have to pay one hour labor to the dealer because it is not covered under warranty even though they didn't change any parts. Bassani sucks...DO NOT BUY their x pipe with cats!