what is the purpose of this? I assume it is like a tvis system. Also can it be done away with? Looks like a restriction to me. we are talking about a turbo car of course.

 

I believe you're talking about the ACIS. It improves power across all ranges of engine RPM: http://www.mkiv.com/specifications/ncf/ncf93/ncf067.jpg

It can be removed if you're going forced induction. I would also remove all vacuum plumbing, the VSV, and the canister.

-scott

 

its been done before. you might find it if you search, but i also remember the guy who did it spoke of a whistling noise? i don't remember.

 

good at least now I know what it is called so I can search it to death.

 

Yea, I got rid of all that stuff.

didnt even get a check engine light- and my car is a 97 (obd2)

 

I took the actuator off of the intake manifold once for a drive to work just out of curiousity, my car felt like such a dog. I'm still NA though.

 

Dog = Good or bad?