what connects to this hole? its on the top pf my BAC. and does neone know a good solution to clean the BAC with?



ok well i guess my picture isnt working, but its a hole on the top of the BAC directly across from the tube that comes from the main intake hose. theres nothing attached to it, and i have terrible idle.

 

is yer fc an N/A? if so from what i've been told it doesnt do anything. they just used the same mold for the turbo versions as they did the N/A ones. the turbo once have an adjustment screw that go in there evidently. but since there is no picture i'm only assuming thats the same hole.

 

(At least on an S5 n/a, I'm not sure about others.)

 

I'd guess you're talking about the unused "hole" in the BAC body. NA BACs don't have anything there, but turbos have an idle adjust screw in that location. The casting is the same.