Originally Posted by Ahmad11
Ok I can't seem to find an answer.
But I have a 06 330i e90 and I was wanting to take out the resonator.....
-how many res are there?
- how much?
-any error codes?
Has anybody done this I'm not looking for too much sound but just more volume/deeper sound!
I had mine taken out a few weeks after I had a magnaflow muffler installed. It added about 20% more sound. It is a lot better!