okay im going to install a racing beat cat converter pipe, pre silencer and a 3 inch corksport catback. on the rb website they say i will have to remove the ac and cv and air pump. is there a way to leave it on any how? car is an s4 na.

 

yeah just leave it on, you do not have to take any of that stuff off.

be aware that the corksport is like the loudest thing on the planet