Can This Breather Hose Be Removed?

[SirRacer]

Just finishing off the intercooler piping for my rb30 and noticed i have forgotten to add in a piece for this pipe. (in pic)

Not 100% what it does but its a breather of some sort.

Can you please tell me what it does for starters, and whether its 100% essential to have this routed into the intercooler piping?

This isnt a pic of my setup, rather one recycled from here, so thanks for the pic

Have put a pic of my cooler pipes for interests sake.

Edited July 19, 2008 by SirRacer

[shoei]

thats for your aac valve/idle control

its what keeps your car idling when u turn on the air con etc

[SirRacer]

Yeah thats the bugger. Can i run a small filter into it, or is it simply best to just plumb it into the intercooler piping?

Cheers

[jeffworld2]

needs to get air through the afm i beleive. all i know is i take my pipe off to stop ppl nicking the car, cause it wont start/idle without that little guy

[SirRacer]

im going to be running a map sensor so whats the deal with that?

[blind_elk]

The AAC bleeds air into the plenum at idle, when throttle is closed.

Just fit the damn thing!

[SirRacer]

cant run a little filter into it without causing any massive problems?

[MBS206]

cant run a little filter into it without causing any massive problems?

If you're going to be running a MAP sensor, and doing it STRAIGHT AWAY (Like when you put the "little filter on" and tune it straight away) then it will be perfectly fine to run with a "little filter on"

If you plan to attempt to drive it even for 20 minutes with the AFM and stock ECU, you won't get far at all UNLESS you block the pipe with some duct tape for a short time, and screw the adjuster screw all the way in and unplug the wires on the IACV and then adjust the throttle so it's partly open when you let off the throttle so that the car will idle.

[W0rp3D]

Off topic but, is there any reason why it seems like you are using 2", 2.5" and 3.5" cooler piping?

I may be wrong but as far as i know the flow will only be as good as the smallest sized piping, so if you have 2" some where 2.5" or 3.5" is wasted.

[PSI Parts]

The 2.5 or 3 is not wasted, it is a restriction, however as long as the pipe diameter changes are smooth then the smaller pipe may not really be that bad.

[SirRacer]

the 2 inch piping is actually 2.25 and is my wastegate screamer.

4inch is my intake and the 2.5 stuff is my cooler piping