RB External PCV system :Review and DIY

RCB · 09-27-2016, 11:27 PM

I have added Part 2: cylinder head port plug instructions to post #1

E92 420 · 09-28-2016, 12:31 AM

Nice comprehensive but easy to follow Wright up. Will certainly be following this when I come to do mine. Repped!

specialist · 09-28-2016, 07:49 AM

great write up i wish i found this before i started. oh well i got it done. Good job on write up!!!!

Petrolhead3010 · 09-29-2016, 12:10 PM

What's the difference between this kit & the BMS OCC?

09-29-2016, 01:47 PM

Quote:

Originally Posted by Giggling_Donkey

What's the difference between this kit & the BMS OCC?

High side vs low side

Petrolhead3010 · 09-29-2016, 09:00 PM

Quote:

Originally Posted by FCobra94

High side vs low side

Ok. And if I understand correctly, a high side kit collects better under low/no boost, while the low collects more during high load/boost?

09-30-2016, 08:30 AM

It's the other way around.

Also, the systems are completely separate; the efficacy of catching fluid on one side has no effect on the other.

Petrolhead3010 · 09-30-2016, 06:16 PM

Quote:

Originally Posted by FCobra94

It's the other way around.

Also, the systems are completely separate; the efficacy of catching fluid on one side has no effect on the other.

Gotcha. I appreciate the info. Thanks

Bme30 · 02-21-2017, 06:26 PM

Is there a way to get all this done with a single catch can vs 2

02-22-2017, 07:49 AM

Quote:

Originally Posted by Bme30

Is there a way to get all this done with a single catch can vs 2

no

NoQuarter · 02-22-2017, 11:24 AM

A pic of how mine turned out in my Z4:

victor247 · 03-24-2017, 12:53 PM

Did mine last night. Any particular reason blue loctite was mentioned over red? I used the red loctite.

NoQuarter · 03-24-2017, 01:06 PM

Quote:

Originally Posted by victor247

Did mine last night. Any particular reason blue loctite was mentioned over red? I used the red loctite.

Blue means you intend to take it apart again.
Red does not

victor247 · 03-24-2017, 01:10 PM

Quote:

Originally Posted by NoQuarter

Blue means you intend to take it apart again.
Red does not

Ok, thanks. I would have no reason to take it apart again.

Makeuwunder · 04-09-2017, 11:24 PM

Can you use the same mishimoto CC for both sides?

SONO_N54 · 04-10-2017, 09:36 AM

I just installed this last Thursday. The installation and results of the external PCV kit are impressive. my car feels a lot smoother under WOT and more responsive into boost. I will update with how much oil I catch after 1,000 miles.

Makeuwunder · 04-10-2017, 09:48 AM

Quote:

Originally Posted by Makeuwunder

Can you use the same mishimoto CC for both sides?

You could, but it's a bad idea to use the "low flow" design on the high side.

Makeuwunder · 04-10-2017, 09:50 AM

Quote:

Originally Posted by FCobra94

Quote:

Originally Posted by Makeuwunder

Can you use the same mishimoto CC for both sides?

You could, but it's a bad idea to use the "low flow" design on the high side.

Thanks for the reply. Guess I'll have an extra one. I should have read the whole thing before I ordered them.

victor247 · 04-11-2017, 06:30 PM

My set up after the RB PCV kit install.

Gohan335i7 · 04-11-2017, 06:39 PM

Quote:

Originally Posted by victor247

My set up after the RB PCV kit install.

This is tits!!🤘🏻

Tim603 · 04-26-2017, 02:19 PM

Was there ever a final consensus on just plugging the low pressure side pcv and if thats a good solution?

It seems people did this in the past and just pushed all pcv through the high pressure side > OCC > rear turbo inlet pipe (which would be the vacuum source).

m5james · 05-06-2017, 04:21 PM

Installing this today on the GF's 08 535xiT. Mind you that this location is only a temporary install. The solid red lines are visible hose, checkered lines are where it's not visible. Seems no matter what routing I do without doing custom bracket will require removing the rear DCI to drain the catch can. Is this really what people are doing?

09-27-2016, 11:27 PM	#23
RCB Enlisted Member 28 Rep 42 Posts Drives: 2008 535Xit E61 Join Date: Apr 2015 Location: Boston iTrader: (0)	I have added Part 2: cylinder head port plug instructions to post #1 __________________ 2008 E61 535xit MHD, VRSF CP, Tial BOV, DCI, BMS OCC, M5 seats, LED interior/DRL, 20" Style 128 wheels, KWv3, M5 steering wheel, M-Sport conversion, VRSF 7"FMIC [VTT Inlets..awaiting install] 2008 Lexus ISF I/H/E, Figs suspension arms, BC/swift, BC wheels, PSS (305 rears).... 1993.5 Supra 857 WHP, GT42R, CCW/R888...
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09-28-2016, 12:31 AM	#24
E92 420 Second Lieutenant 48 Rep 263 Posts Drives: 2006 Auto e92 335i Join Date: Dec 2014 Location: Norfolk iTrader: (1)	Nice comprehensive but easy to follow Wright up. Will certainly be following this when I come to do mine. Repped! __________________ UK V8bait Tuned Built motor FBO 335i
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09-28-2016, 07:49 AM	#25
specialist First Lieutenant 26 Rep 352 Posts Drives: 335i Join Date: Apr 2013 Location: toronto iTrader: (0)	great write up i wish i found this before i started. oh well i got it done. Good job on write up!!!!
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09-29-2016, 12:10 PM	#26
Petrolhead3010 Second Lieutenant 52 Rep 252 Posts Drives: 2021 BMW X3 M40i Join Date: Aug 2014 Location: Marysville iTrader: (0)	What's the difference between this kit & the BMS OCC?
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09-30-2016, 08:30 AM	#29
FCobra94 Guest 0 Rep n/a Posts Drives:	It's the other way around. Also, the systems are completely separate; the efficacy of catching fluid on one side has no effect on the other.
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02-21-2017, 06:26 PM	#31
Bme30 Major 88 Rep 1,039 Posts Drives: 335i coupe Join Date: May 2010 Location: 'Merika' iTrader: (2) Garage List 2007 335i [0.00]	Is there a way to get all this done with a single catch can vs 2
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02-22-2017, 11:24 AM	#33
NoQuarter Captain 164 Rep 906 Posts Drives: 2008 535xi / 2011 Z4 35Is Join Date: Jan 2011 Location: Indiana iTrader: (0) Garage List 2018 BMW X2 [0.00] 2008 535xi [0.00] 2011 Z4 35is [0.00]	A pic of how mine turned out in my Z4: Last edited by NoQuarter; 08-17-2017 at 09:42 AM.. Reason: fixing the image
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03-24-2017, 12:53 PM	#34
victor247 Private First Class 43 Rep 144 Posts Drives: 08 335i E93, 2012 GTI KO4 Join Date: Jul 2011 Location: Chicopee MA iTrader: (0)	Did mine last night. Any particular reason blue loctite was mentioned over red? I used the red loctite. __________________ 2008 335i E93 Single Turbo Join our national street racing community! https://www.facebook.com/groups/streetracingcreed/ https://wwwStreetRacingCreed.com Instagram - StreetRacingCreed
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04-09-2017, 11:24 PM	#37
Makeuwunder First Lieutenant 62 Rep 307 Posts Drives: 07 335i Join Date: Jul 2013 Location: Savannah, Ga iTrader: (1)	Can you use the same mishimoto CC for both sides?
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04-10-2017, 09:36 AM	#38
SONO_N54 Private 33 Rep 45 Posts Drives: 2007 BMW E90 335i Join Date: Oct 2015 Location: Chesapeake, VA iTrader: (0)	I just installed this last Thursday. The installation and results of the external PCV kit are impressive. my car feels a lot smoother under WOT and more responsive into boost. I will update with how much oil I catch after 1,000 miles.
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04-11-2017, 06:30 PM	#41
victor247 Private First Class 43 Rep 144 Posts Drives: 08 335i E93, 2012 GTI KO4 Join Date: Jul 2011 Location: Chicopee MA iTrader: (0)	My set up after the RB PCV kit install. Attached Images __________________ 2008 335i E93 Single Turbo Join our national street racing community! https://www.facebook.com/groups/streetracingcreed/ https://wwwStreetRacingCreed.com Instagram - StreetRacingCreed
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04-26-2017, 02:19 PM	#43
Tim603 Colonel 483 Rep 2,283 Posts Drives: 2007 335i E90 Join Date: Feb 2012 Location: North Canton, OH iTrader: (8) Garage List 2007 335i [0.00]	Was there ever a final consensus on just plugging the low pressure side pcv and if thats a good solution? It seems people did this in the past and just pushed all pcv through the high pressure side > OCC > rear turbo inlet pipe (which would be the vacuum source). __________________ Build Thread
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05-06-2017, 04:21 PM	#44
m5james Colonel 431 Rep 2,062 Posts Drives: '10 X5M Alpine White on Sakhir Join Date: Aug 2015 Location: Marysville, WA iTrader: (0)	Installing this today on the GF's 08 535xiT. Mind you that this location is only a temporary install. The solid red lines are visible hose, checkered lines are where it's not visible. Seems no matter what routing I do without doing custom bracket will require removing the rear DCI to drain the catch can. Is this really what people are doing? Attached Images __________________ '10 BMW X5///M - Alpine White on Sakhir Orange - JB4 w/ HCP Stage 2 BEF, NGK 97506 @ .20, SS tubing & BMC filters, gutted cats, AC Forged 312 22's, H&R 2" '98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's '97 BMW 328ci - ///E36 M3 clutch & L/W flywheel, Z4///M 18's
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