Fittings for FMIC piping- what do I need?

[paulphot]

Hi guys :wave: , hope you can shed some light for me, I have pre fabricated piping for my FMIC (alluminium 2 1/2 inch) but there are no fitting ports on it. What do I need seeing as I have a maunual boost controller, will be using the factory BOV for now and there are no other mods except for cat back exhaust. Do I just need the BOV port and the feed from the hot pipe for the MBC to attatch? There is a third hose on the factory piping which goes under the inlet plenum/inlet manifold somewhere. Do I need a port for this, what does it do or can I block the hose and not worry about a fitting for it? Sorry I can't post pics of what I'm on about at the moment, damn work computers.

Cheers

 

[Yakozan]

I have all three on my pipe-kit. all mounted on the cold-pipe.
Don't know what that third is for either.

 

[paulphot]

Thanks mate, now I just need to work out how to actually mount it to the car, has anyone done a DIY install of a FMIC on their S15?

 

[Nicely]

You need two on the cold pipe, one for the recirc and the other for the plenum pipe. You need one take-off from the hotpipe for your boost controller.

This may or may not be of help (further on in the thread): http://www.sxoc.co.uk/vbb/showthread.php?t=102316

 

[paulphot]

Thanks Nicely, once again you are the man. What is the recirc for? does it balance the pressure in the pipe with what's in the intake manifold or something?

 

[Nicely]

The recirc valve is where you'd fit a BOV. It does what a BOV does, but without the :ghey: sound and without venting to atmosphere. It also does it without the jerkiness that you get when lifting off/changing gear with a BOV, and without the overfuelling.

Many people change the recirc valve because its meant to leak around 1 bar. Many people have also never encountered this. I've recirced my SSQV BOV to get the efficiency of the BOV, but the smoothness and fuel efficiency of a recirc valve.

 

[paulphot]

Okay, I'm with you now, the brain has just icked into technical mode and all is well with the world again. Cheers Nicely.