My 00 A4 quattro has a Greddy cat-back system. I have a check engine light that is throwing an 02 sensor code and an intake temp sensor code. Does the reduction of backpressure have the ability to throw these codes?
Thanks
Josh

 

this one ? if so can you post pics and a sound clip

 

I have a cutom 2.5 exhaust and the atp downpipe (where the sensors are) and it comes on and off everynow and then. I thought it was just me.

 

You spelt foreign wrong in your sig btw.

 

Yea ExpLlclT, that is it. Kinda loud for my tastes though. I will get pics soon. Sound though? I'll see what I can do. Any ideas for what I can do? Thanks.
BTW, thanks tip5,my bad... Ill get on it

 

unless you have a testpipe...a plain catback shouldnt give it the ability to throw codes...its prolly just a coincidence.