oil coming from blow off

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11-23-2008, 07:40 AM

535i rob

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My Ride: 2008 535i white/black sport,prm,navi,cold weather

hey guys went to MIR this weekend really was alot of fun pushing these car to there limit . but i noticed oil is coming out of my active auto werks blow off . anyone know why ?

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11-23-2008, 07:59 AM

ktlocklear

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My Ride: '06 550i '84 Nissan S12 Turbo

Quote:

Originally Posted by 535i rob' post='729060' date='Nov 23 2008, 10:40 AM

hey guys went to MIR this weekend really was alot of fun pushing these car to there limit . but i noticed oil is coming out of my active auto werks blow off . anyone know why ?

Are you over boosting, or @ stock boost? Do you have a oil catch can? If not...it's probably just "oil blow by" getting recirculated back into the intake tract, which is common on turbo motors, especially when run hard. It would be best to install an oil catch can so the oil collects there instead of your intake tract, intercooler, intake manifold, valves, etc.
If oil is coming out of the bov, then you already have oil coated in the intercooler piping, and intercooler, which is not a good thing. Worst case scenario is you have a blown oil seal on the turbo(s) which I would find hard to believe would happen on a '08, but you never know. I would start with a catch can and go from there

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11-23-2008, 03:26 PM

bigbadbull

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My Ride: 2010 VW Passat Wagon 2.0l Tsi Grey/Grey Budapest 18" Lost to HPFP issues: 08 535i sport pkg Lost to Dreaded E61 Sun roof leaks: 07 E61 530Xi

Cause it is not a BMW part....
You need the Oil Catch can...lol

The blow off is not needed on a 535... the amount of Hp where it would be useful, the car cannot achieve.
The Ecu will start detuning ( retarding Hp)the car at about 400-410 hp ( check out the E90post turbo forums.... its been documented there.)