ok, got my s4 exhaust manifold in today. i know i need to oval the holes and all for it to fit on my 12a, but what do i do with that damn flapper? remove it? how does it work? thanks ,

-zac

 

anyone?

 

Yeah, you can take out the flapper.

It's purpose was to direct all the exhaust through one of the turbo runners at low engine RPM, which helps spool the turbo a little faster. Unless you have the actuator it will just flop around.

 

awesome, how do i take it out though? hahaha cut it? will my turbo spool less quickly though? everything that can be has been ported on it.