19Eclipse90 said:

This is your PCV valve.

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The port with the filter on it is a breather. It should be connected to the intake pipe by a hose to pull gases out of the crankcase.

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19Eclipse90 said:

Ah, I didn’t notice that.

It should be connected by a hose to the intake plenum. Kinda hard to see but it does not appear that you have an original intake manifold, though, so maybe easier said than done.

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19Eclipse90 said:

Ah, I didn’t notice that.

It should be connected by a hose to the intake plenum. Kinda hard to see but it does not appear that you have an original intake manifold, though, so maybe easier said than done.

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tschuhly said:

If I were you I would take that cap off. Check to ensure the PCV only blows air one way (out of engine). Connect a hose from it to the big nipple that is down behind the fuel rail right behind the PCV. Then, like 19eclipse90 point out, take that filter off and put the hose back from that nipple to the intake pipe.

I'm curious, do you find that your dipstick blows out of the tube? It may not since the filter is on there.

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tschuhly said:

Oof, I am not an expert with DSM's by any means but I have heard that these should have a sealed catch can...I have heard that people run vented without issue though. Are you running MAF or Speed Density?


This was super helpful for me: https://www.dsmtuners.com/threads/the-4g63t-pcv-system.366890/

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2G - Oil Catch can questions

Just wanting to make sure, ive read many threads and all the answers were either do it or dont do it so im confused now LOL. I bought a 3 port baffled catch can (mishimoto rep) was wanting to replace the pcv with a free flowing barb fitting then run a line from that to one of the 'in' ports on...

www.dsmtuners.com

ThunderChild said:

I guess I don't see how being SD would have any bearing on the catch can setup, but I'll bite.

Essentially, since SD system only looks at baro and iat, the catch can could somehow cause a pressure differential and throw things off. I highly doubt this though.

Catch cans should be more thought of in a "what am I doing with the car" fashion. Just because you have two massive lines to a vented can that looks pretty, doesn't mean it's right for you're car.

2 sealed cans seems like a reasonable choice for 90% of us running street/strip.

Once you start pushing higher crank case pressures, spending less time idling or DDing the car than you do with you're foot mashed to the floor, is when you might consider moving to a high flow can, capable of at least relieving pressure to near ambient levels.

Also, most race cars aren't even running an intake pipe on the turbo so you cant run a fresh air suction line to the can, and I'd bet ppl running 50+ psi aren't wanting to have a possible leak from a pcv line/valve self destructing or popping off at said pressure in the middle of a race.

The idea is to pull a vacuum on the crank case, which a stock like system is barely able to do, but better than a single, huge lined vented can.
Race cars should be running a vacuum pump of sorts to actually pull vacuum on the crank case from a proper ventilation and power production stand point. Sadly they're complicated, costly, and steal power from the engine/electrical system, as well as take up space and add weight.

Vented catch cans are more cost effective and at least keep things manageable for race teams. For daily cars, one or two sealed cans are better options. I also don't see how SD or MAF plays into it aside from my above mentioned thoughts.

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tschuhly said:

True dat! Which may explain the setup...19eclipse90, would he be able to connect to another intake nipple? Does it have to be that specific one that is intend for the PCV. Like if he were to t off of the brake booster line, would that work?

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