I have a quick question that has been a pain to find the anwser for. I was wondering if there was anyway to put electric exhaust cutouts on the stock exhaust before the cat. converter. It would be great if someone could send a picture of the diagram of the stock exhaust. The reason im asking is because im about to exhaust work for a friend who has an S4 and i just wanted to see what i was getting into before hand Thanks.

 

you can put a cutout anywhere there is exhaust piping as long as you have the correct diameter cutout. if you are doing exhaust work, you really should already know this......

and if you are doing it pre-cat, you need 2 cut outs, one for each side