Have been doing a fair bit of reading on this area, and given that the intercooler I had when I bought my car was verging on knackered (have since gone FMIC) I'm considering adding a catch can to the engine bay to avoid similar getting into the new FMIC core.

I've read a few FAQ's on NASIOC and on here, but there seems to be some disagreement over what's best to install.

The guys in the US seem to be in favour of a dual setup, whilst over here people seem to be split between that approach, and various other configurations.
Some say vent to atmosphere with a breather is right, whilst others say that routing the clean air back into the system to keep pressure up is better.
I have to say the latter sounds sensible to me (especially if it means I don't get fumes into the cabin), but what do those of you who are running them think?
Either way I'm going for a baffled can, but what would people recommend?

I've found a few, ranging in price, but admit I don't know enough about this stuff. Happy to install it, but what to go for.
http://innovatemotorsports.co.uk/pro...&cat=16&sub=86
http://www.saikoumichi.com/sti_dual_occ.htm
http://www.ebay.co.uk/itm/3-PORT-BAF...-/120934650847

https://www.scoobynet.com/scoobynet-...here-from.html

 

I have a 3 port obd baffled set up that vents to atmosphere through a breather under the car.
I fitted mine when I put on a fmic to avoid a build up of crap in the new intercooler.
the amount of crap that's in it when I empty it I really wouldn't want that returned to my sump.

 

As. Above my vta outlet is halfway down the car. So no cabin fumes

 

mine too.

the can is on the passenger side strut tower and the breather goes down beside the gearbox and under the car

 

Cheers lads, what make did you go for and how much if you don't mind me asking?

 

mines an obp 3 port baffled version, about £65 quid is and a tenners worth of tubing and a few clips to fasten the pipes on and a breather filter.


there is not a lot of room to fit one in the newage engine bay, I fabricated a bracket at work to fit it too.

 

3 port is the way to roll ....

1 port ... Goes to head breathers on t peice
2nd port... goes to crank breather then close of valve on inlet manifold
3rd port ... Is u vta

Then just empty when near full

 

isn't that a 2 port

mine has 3 ports and a breather so you don't t the head breathers

 

Surly that's 4 .... I would have thought a 2 port u just t peices the lot and the second is a breather then a 3 port is what I have ( I think lol ) surly urs must be a 4 port but I'm sure I will be corrected as usual.. Lol

 

http://www.obpltd.com/obp-shop/alloy...k-for-subaru-4

 

Didn't I tell u I would be corrected !! This is why I shy away from the tec stuff lol ... So what are the catch cans with just 2 ports called I mean don't they just connect the whole lot up and vta the second ? Is that a 1 port then ?

 

I always liked the idea of the grimspeed air oil seperator

http://www.rallysportdirect.com/Grim...-STI-2002-2011

pricey though!

 

There is a GB from cdf on 3 port cans at the mo, but its very slow on the production front, if they arent ready by the time my build is done ill prob get the obd one that tommy has mentioned.

 

cant fault it for the price, its a big bugger though.

 

Have you got the 1 litre one?

http://www.obpltd.com/obp-shop/alloy...ank-for-subaru

The polished ali doesnt really take my fancy, my sec air pump is being removed leaving a nice hole for mine when its ready.

 

yeh that's the one, mine is fitted where the pump would be if I had one, one the side of the strut, there a re some holes there so I made up a bracket at work for the can

 

To the OP I hope this answers your question. 1, 3 port can is enough with a breather, ive seen pics and real life scenarios of what gets left in the cans and I for sure wont be plumbing into the sump.

Whether or not its 'burnt off' when returned. If your going to track it alot, I assume youd carry spare oil anyway.

 

Running one on mine and can't fault it - I've adapted mine so it vents to air not back to the inlet.

 

Been thinking of one for a while too, how important are they

 

This is the best install guide I've seen for one

 

Great stuff guys thank you. I'll probably go for the OBP can then.
This one you reckon?
http://bit.ly/11HPsHk

Also, which tubing do people recommend?

 

Nice one, im sorely tempted to invest in one

 

The only thing I'd say is this one:
http://www.obpltd.com/obp-shop/alloy...ank-for-subaru
...the inlets seem to be a bit on the small side for a turbo car?

I thought it should have 15mm inlets, in which case wouldn't it be this one that I should buy?
http://www.obpltd.com/obp-shop/alloy...h-tank-3?pop=0

 

Anyone?
The only issue with the 15mm inlet can seems to be that the inlet at the top would be harder to run a hose out of and then back under the car.

 

heres mine, I would take more pics but its raining.

as said earlier its installed on the passenger side strut tower with a bracket I made at work.

the top hose goes down the side of the engine and underneath the car and has a filter on the end.

I have no air pump on my car as its a 2.0 sti plus I have a fmic so the top mount isn't in the way either.

 

How do you empty it? Does it have a visual gauge too see how full it is?

 

yes it has a gauge on the side,its the obp one mentioned in the link above.
To empty it I need to undo one bolt that holds it on the bracket and empty.

it takes about 6 to 8 weeks to fill over the last year.

obviously you can return to sump but I didn't due to the amount of crap you get inside the can.

 

I've used them on the Leon to delete the Pcv system just never done a Scoob. The amount of crap that comes out is quite amazing

 

It's tempting to copy the install guide on here and buy 2 cheapy ebay jobs for £20 a piece like these ToyoSports ones and just chuck a baffle into each...
http://www.ebay.co.uk/itm/1906474355...84.m1423.l2648

£70 is a lot for something that's basically a can with 4 outlets!

I know the difference is only £30 but I'm just wondering what the up and down sides are to venting the pressure to atmosphere with the 3 port, as opposed to putting it back through the system with 2 x 2 port cans.

 

Anybody? Or am I just being too pikey