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Old 11-20-2006, 06:07 PM   #126
XWRATED
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I wonder, for the first two fittings that go into the inlet hose (they are both small diameter hoses, I believe one is the map sensor, and the other I am not sure. I wonder if I can tee these two together???
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Old 11-20-2006, 06:39 PM   #127
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Check the picture here, I want to "T" hoses 3 and 5.. Would that be ok?

Scott

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Old 11-21-2006, 02:35 AM   #128
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5 is the return air from your factory boost control solenoid. I don't remember 3 it's been so long. I'm no help anyway for which are the est to T, I'm waiting for an answer as well.
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Old 11-21-2006, 05:11 PM   #129
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Someone's gotta have the answer to this. The number three hose goes to some round plastic looking "widget" that has another fitting from it to the intake manifold right on the front there.

Scott
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Old 11-21-2006, 05:26 PM   #130
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Quote:
Originally Posted by byroll01 View Post
5 is the return air from your factory boost control solenoid. I don't remember 3 it's been so long. I'm no help anyway for which are the est to T, I'm waiting for an answer as well.
Ok, I just found out that hose 3 is going to the purge control solenoid. Now for the simple question! Can I "T" hose 5 (boost control solenoid) to hose 3 (purge control solenoid) so I have an extra entry point to the inlet hose.

Scott
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Old 11-23-2006, 11:17 AM   #131
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Quote:
Originally Posted by byroll01 View Post
I have the perrin inlet as well and I was waiting for the same answer.
If it doesn't come then check valve will be my solution.

where would you mount the check valve?
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Old 11-23-2006, 03:09 PM   #132
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here is that check valve kit I was looking at:
http://www.et-performance.com/turbo.html

and another thread discussing these similar questions:
http://forums.nasioc.com/forums/show...ve+check+valve
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Old 11-30-2006, 06:30 PM   #133
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Well I used the catch can for the pvc to inlet hose. metal line off the intercooler I just ran to a breather that I picked up from autozone that fit perfect and looks like it belongs underneath the hood. I ran a hose like it would normally run in those plastic clamps and then down around the purge control solenoid I installed the breather. I expect it to do the job for the missing fitting. I read a few people talke about the air from the turbo sucking the pressure from that line, but I figured if any pressure got in there, it would be forced out from the breather. Thats how it is on my turbo buick, and thats how I expect it to be here. We will see how it goes. I'll post a pic when I get a chance. I have extreme confidence that this will work fine.
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Old 11-30-2006, 08:56 PM   #134
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Here's the kit that I am running. You have probably seen the original version a few pages back. This is the new updated version made of larger ID tubing and 100% high temp silicon. If anyone has any questions, let me know.

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Old 12-07-2006, 03:47 PM   #135
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do you guys think it'd be okay to use 1 line from the intake for both catch cans?
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Old 12-18-2006, 09:44 AM   #136
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I'm wondering about two things.

First, I've read the inside diameter of the system (hoses and fittings) should be as uniform as possible. A cheapo catch can I have has fittings that are close but the actual size of the hole going into and out of the can gets pretty small. I'm wondering what the downside of this is?

Second is about the medium put inside cans to help condense the various vapors. Any thoughts on using thick fishing line? I've got a lot of it, it won't rust or corrode, I think it would take 1000 years to break down and I'd think a tangled mess of it would work okay for condensation material.
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Old 12-23-2006, 09:58 PM   #137
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Is there any reason you can't use something like aluminum window screen?
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Old 01-18-2007, 11:26 AM   #138
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I would like to add something about installing a catch can. I just removed my greddy catch can installed by the prior owner and replaced it with a Crawford Air/Oil Separator. I noticed the can was installed completely wrong.

On the STI There are 2 valve cover vents.
Make sure you used the one closer to the AVCS controller (closer to front of the car)! Mine was backwards and caused my catch can to fill up frequently.
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Old 01-18-2007, 01:34 PM   #139
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I don't want to sound like an idiot, but wouldn't you want your catch can to fill up? It's catching things.
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Old 01-22-2007, 01:21 AM   #140
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Would having a catch can like the AVO with 3 ports on it be a better solution than 2 cans? That way you have the line from the PCV and from the Valve cover coming in to the can and a single return to the turbo inlet pipe?
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Old 01-22-2007, 05:57 PM   #141
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after doing a lot of reading. I am still confused as the whether the WRX needs one or two catch cans. I think one, but I'm not sure. Why the heck does the STI need two and a WRX need only one?
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Old 01-22-2007, 09:04 PM   #142
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from what i have gathered, from this thread and others on this subject, ideally any wrx (sti or otherwise) would benefit from 2 cans because the crankcase vents and the PCV are two different systems and ultimately should stay that way. One catch can can be used if you A. use checkvalves in the appropriate lines or B. don't care and figure with one can you are still doing more good than bad.
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Old 01-23-2007, 03:23 PM   #143
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yeah. that's what i figured. but i thought i saw Uncle Scotty chime in here or maybe some other catch can thread (can't remember, reading toooo much) and he said STI needs two. WRX needs one. Scotty knows what he's talking about when he's being serious. That's where the confusion came from.

EDIT: found it. here it is.

Quote:
Originally Posted by Uncle Scotty View Post
....ej25x = 2 catch cans

....ej205 = 1 can
Any chance you can clarify doo000ood??

Last edited by Phat04WRX; 01-23-2007 at 03:39 PM.
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Old 01-23-2007, 07:15 PM   #144
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Rather than returning a line from the catch can to the inlet pipe....could we not just have a vent to relieve the can and prevent improper airflow direction to the valve covers?? That way we could have the 2 sources entering the can and only need 1 can to do the job?
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Old 01-23-2007, 08:29 PM   #145
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Nice info.
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Old 01-25-2007, 08:02 AM   #146
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I have an N/A 2.2 and I'm not running a PCV at all. I have the two valve cover breathers and block breather T'd together going through an oil catch can. I've had it this way for about 15k miles and haven't seen any signs of anything bad.
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Old 01-25-2007, 12:38 PM   #147
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Come on Uncle Scotty clear this up. It'll only take a minute. i'm sure it'll be painless
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Old 01-28-2007, 06:45 PM   #148
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does anyone know where the forum is for the make it your self oil catch can under like 30 bucks. I searched and didnt find it. thanks
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Old 03-28-2007, 10:44 PM   #149
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bump this up for search purposes
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Old 06-02-2007, 11:53 AM   #150
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here's a question that hasn't been covered:

Do Catchcans void your warranty? Esp. if you cut into the stock lines?
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