Did you guys have problems with the 02 sensors when installing the y-pipe?

 

Why?? Do you have one??

 

I will installing on Friday... but i heard about the sensors...

 

yah, i have a o2 sensor problem after i got my exuast. my Service engine light was on for a few days.. took it to a local shop, they told me it was a o2 sensor problem, and turn off the light and said if it comes back on again, go back to them again.
i drove around for 2 more weeks, lights come on again, before i took it back to the shop, lights were gone.. i still think the damn o2 sensor is broken cuz i feel like iam gettin low milage or maybe just the high gas price?

 

I didn't have a o2 sensor problem when I installed mines.. You should have any. If anything you might get a CEL. But that's because your car needs to adjust with not have any cats and just the pre-cat. Reset the battery and the cel light will go away.