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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Problems with OCC



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      03-02-2011, 03:43 PM   #1
Joshboody
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Problems with OCC

thought I'd start another thread to get some feedback in light of OCC potential issues.

How could AFR be effected... my only thought is contamination on the exhaust stroke... but why only bank 2 when crank case pressure should be pretty equal.

restrictive plumbing makes sense for increase pressure and inadequate venting.

Think the cyclone thingys perform better under vacuum and thus stock setup better then breather?

just throwing some points out there.
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      03-02-2011, 04:18 PM   #2
MDORPHN
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Also interested in this issue, especially as to merits/demerits of specific occ designs (BSH, AR,etc.)

Neil
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      03-02-2011, 07:25 PM   #3
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I think its time we just vent it outside, forget about the can completely.
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      03-02-2011, 07:38 PM   #4
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Quote:
Originally Posted by marcvtec View Post
I think its time we just vent it outside, forget about the can completely.
Have you ever run a crankcase filter? It smells like shit. Sorry, I still have no proof the occ is causing procede misfires. Afrs, maybe.
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      03-02-2011, 07:40 PM   #5
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Quote:
Originally Posted by MDORPHN View Post
Also interested in this issue, especially as to merits/demerits of specific occ designs (BSH, AR,etc.)

Neil
+1
I want to see a witch hunt
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      03-02-2011, 08:05 PM   #6
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Im stumped on this.... I want to say it was a coincidence that the OCC was removed and problem solved....

In for a reasonable logic.

I have the Riss Racing OCC, and my car hasnt missed a beat.
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      03-02-2011, 10:53 PM   #7
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Quote:
Originally Posted by JPSlick View Post
Im stumped on this.... I want to say it was a coincidence that the OCC was removed and problem solved....

In for a reasonable logic.

I have the Riss Racing OCC, and my car hasnt missed a beat.
how often do you empty it? I have one and have not seen any oil in the tube unless i move it. It also does not leak, its been on since about June of last year...
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      03-02-2011, 10:57 PM   #8
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Quote:
Originally Posted by JPSlick View Post
Im stumped on this.... I want to say it was a coincidence that the OCC was removed and problem solved....

In for a reasonable logic.

I have the Riss Racing OCC, and my car hasnt missed a beat.
Well, i pulled my OCC out and ..........

still misfiring....
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      03-02-2011, 10:59 PM   #9
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Quote:
Originally Posted by badass335 View Post
Well, i pulled my OCC out and ..........

still misfiring....
it has NOTHING to do with ur OCC. Wait for a fix.
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