i need opinions on putting a new exhaust on my 08 A4 2.0t. I've heard that redoing the exhaust can cause other problems such as the o2 sensor. Is there a way to put an after market exhaust on without ruining anything else?

 

I believe there are systems designed to prevent the CEL from popping up. They are expensive (IMO). I am thinking about removing the resonators on my 2008. Should give it more of a throat without any issues.

 

i removed the resonators on my 07 a4 2.0 t it sounds great more deeper tone and around 3000-4000 when you shift you can also hear the turbo spool and a exhaust sounds awesome