Originally Posted by Troy Jollimore
Heh. You haven't seen the die-hards, Rob. wink

I don't know 'piggie pipes', and I haven't had time to really find out what the N75 valve does. It sounds like a BCS, but a little different.

You're good Troy. The N75 valve is a boost regulating valve that is prone to fail on a lot of Audi models. You can bypass the N75 with a MBC if you like.

'Piggie Pipes' are downpipes that have been gutted to produce more flow/power. Basically the same principle as gutting your cat.

6-MT Stage II B5 Audi S4