Intake /Oil catch can..

[ph3r3d]

Most of the aftermarker Intakes for 2g MASs do they come with that tube that connects to the valve cover? or can u get them eliminated? I dont see the purpose of having oil sucked into my turbo.. and where can i buy a catch can for the oil run off from the valve cover? or could i just use a breather filter and clamp that one?

[BoostedGS]

You can use a breather filter, but if you get too much crankcase pressure you'll blow out oil everywhere. RRE sells a nice catchcan, Summit sells one, etc.

[Danny]

Just use a Fram Fuel Filter. I believe it is model GR2. Get a rubber hose and run it from the filter to the rear of the transmission to avoid oil going all over under the hood in the event of excessive pressure. It also keeps your air filter cleaner because if you have that venting under the hood right off the valve cover it still seems to let oily vaprs out and my air filter got dirty super quick. Once I ran a hose from the filter to the rear of the engine bay it stopped getting dirty so quick.

Just my .02 worth

[Hal]

If you are using a draw through MAF, you do NOT want your breather vented to atmosphere.

The intake will draw air through the PCV.

This in turn comes THROUGH the breather hose.

If the hose is "open", you let unmetered air into the intake.

This causes you to have lean fuel trims.

In some cases so lean that the ECU can't compensate.

This can cause erratic idle/cruise operation as well as emission testing failures.

Hal

[v413nc3]

While on the subject, and Hal makes an excelent point... keep in mind some of you guys with larger turbos that the more boost you make the more positive crank ventilation you'll need up top to keep your rings sealing. One line is not normally enough once you get over the 16G area of turbos, and 2 lines don't normally cut it once you get above a turbo producing 44lbs min (20G)...