I"m new to this board and seem to be getting conflicting information. I have a 91 NA. Do I need a split air pipe to open my 5 and 6 ports, or does the air pump do this alone in the S5? I want to do a budget exhaust and dump the cat which contains the split air pipe. Thanks.

TODD

 

The air pump works the ports on S5's. Race pipe that biotch.

 

It's all air pump baby. The exhaust means nothing!