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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 > 3 port OCC pressure test



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      02-20-2015, 07:18 PM   #1
robc1976
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3 port OCC pressure test

I made a 3 port OCC with -AN fittings and "AD Engineering" fittings in valve cover and decided to test pressure. I put fiiting in oil cap and ran vac line to gauge.

Here is my DIY 3 port OCC (see link)

http://www.e90post.com/forums/showthread.php?t=1091100








I blew in vac line to be sure it was working:




At Idle there was no pressure so went for drive and there was very little pressure at 12-15 psi:



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      02-21-2015, 10:26 PM   #2
332ijunkie
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You technically want to see some vacuum on the crankcase at idle/low load cruise
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      02-22-2015, 09:47 AM   #3
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Quote:
Originally Posted by 332ijunkie View Post
You technically want to see some vacuum on the crankcase at idle/low load cruise
vacuum it's attained from turbo inlet.
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