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  1. #1
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    4 out of 4 members liked this post. Yes Reputation No

    BMS OCC - Three months later.

    I checked my OCC today, and this is the catch from the last 3 months with 16 psi, no meth. Pretty easy driving.

    It'll be interesting to see the catch when I'm boosting 18 psi with meth on the airfield events this year! Click here to enlarge


    Click here to enlarge
    GT-R R35 ​coming up...

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    That OCC is legit. I need to get one along with that RB PCV2 prototype if it does what it should.

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    Damn I need one too

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    So where does all this oil go if you don't have an OCC?
    After driving around with my car for nearly 4 years the FMIC should be filled to the hoses by now if there is no other way of getting rid of it....
    There are two theories to arguing with women. Neither one works

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    I like how you took the time to do this.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    If there is no OCC, the oil gets dumped back at the intake manifold and eventually hits the intake valves. ...and because there is no fuel washing the valves in a DI motor, you end up with this $#@!:

    Click here to enlarge
    From all the things I've lost,
    I miss my mind the most!
    Click here to enlarge

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    Big Tom,

    How are the pressures in the PCV system? The last OCC I used (BSH) was a complete disaster because it did not capture anything...
    From all the things I've lost,
    I miss my mind the most!
    Click here to enlarge

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    I've had mine on for a month running 18 psi and meth. I'll empty it out at 90 days and post pics. I expect much of the same as Big Tom or worse. Too bad BMS didn't come out with this sooner. I've had a pretty rough idle for the last few months so I'm assuming my valves are pretty bad. Either that or I have an injector failing. It'll be going to the dealer next month so I report what they say.
    2011 335is DCT, JB4 + MHD BEF, stage 2 LPFP, e50 + 50/50 meth, FBO, MT ET Streets when needed


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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    Big Tom,

    How are the pressures in the PCV system? The last OCC I used (BSH) was a complete disaster because it did not capture anything...
    I don't think anybody has done any tests on this OCC regarding the back pressure, but looking at the sizes of the hoses and the free flowing internal baffle, I can't imagine there could be any problems.
    GT-R R35 ​coming up...

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    Click here to enlarge Originally Posted by Big Tom Click here to enlarge
    I don't think anybody has done any tests on this OCC regarding the back pressure, but looking at the sizes of the hoses and the free flowing internal baffle, I can't imagine there could be any problems.
    Big Tom, do you mean this BMS OCC, because it does not look at all like your photos...
    There are two theories to arguing with women. Neither one works

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    Click here to enlarge Originally Posted by DavidV Click here to enlarge
    Big Tom, do you mean this BMS OCC, because it does not look at all like your photos...
    I believe he is pouring the BMS OCC into his old OCC for comparison.
    2010 e92 M3 Jet Black | DCT | ESS Tuned | Akrapovic Slip-on | Challenge X-pipe | AFE Intake | 18" Volk TE37SL | KW V3 Coilovers | RPI Scoops | Under Drive Pulley

    2007 e92 Mont. Blue 335i | 6MT | COBB Tuned | Quaife 3.46 LSD | Helix FMIC | AA DPs | HKS Exhaust | DCI | Stett CP w/ Forged DVs | KWv2 Coilovers | UUC Sway Bars & SSK | HPF Stg 2 Clutch | HFS-4 | M3 Suspension Bits | DEFIVfab Diff Lockdown Kit | Stoptech Trophy BBK

  12. #12
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    Mmm, that looks like a necessary addition to the OEM car itself.
    I just now ordered one BMS OCC.
    Thank you Big Tom.
    There are two theories to arguing with women. Neither one works

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    Click here to enlarge Originally Posted by nafoo Click here to enlarge
    I believe he is pouring the BMS OCC into his old OCC for comparison.
    +1
    SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, Vishnu Exhaust, DCI, ACT, Nitto Nt555

    '10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2
    installing soon: Mfactory LSD, , powerflex subrframe bushings

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    Click here to enlarge Originally Posted by Big Tom Click here to enlarge
    I don't think anybody has done any tests on this OCC regarding the back pressure, but looking at the sizes of the hoses and the free flowing internal baffle, I can't imagine there could be any problems.
    Been too busy to play with the CC pressure testing...hopefully soon
    Click here to enlarge

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    Will it fit on an M3 strut bar?

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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    If there is no OCC, the oil gets dumped back at the intake manifold and eventually hits the intake valves. ...and because there is no fuel washing the valves in a DI motor, you end up with this $#@!:

    http://www.bimmerboost.com/images/im...IMG_4609-1.jpg
    While I'm sure of that gunk is oil from the PCV system, I'd guess the majority of it is probably just normal flow/leakage from the valve guides.

    I'm also very interested to know what the "stuff" is in the OCC- is it nearly pure oil or is it some mix of water/junk/oil that makes it seem more volume than it really is?

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    Very nice! It's been really interesting to see how much oil is caught in some cars. Others only catch a small amount. Must have to do with driving style and engine condition. But whether it's a lot or a little you must stop that oil from getting back around in to the intake path. Even a small amount can cause buildup, reduce the thermal efficiency of the IC, reduce octane, etc.

    Here was my catch from two days of racing. I get about 1oz per month on average. Seems similar to BT.

    Click here to enlarge

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    Click here to enlarge Originally Posted by blisstik Click here to enlarge
    Will it fit on an M3 strut bar?

    Now that's something I want to know as well! I recently installed M3 Strut bar and I am rethinking my decision to run with stock PCV system.
    From all the things I've lost,
    I miss my mind the most!
    Click here to enlarge

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    Click here to enlarge Originally Posted by BavarianBullet Click here to enlarge
    While I'm sure of that gunk is oil from the PCV system, I'd guess the majority of it is probably just normal flow/leakage from the valve guides.I'm also very interested to know what the "stuff" is in the OCC- is it nearly pure oil or is it some mix of water/junk/oil that makes it seem more volume than it really is?
    It would be interesting to put a sample through a used oil analysis.

  20. #20
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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    Now that's something I want to know as well! I recently installed M3 Strut bar and I am rethinking my decision to run with stock PCV system.
    I don't know but you can always just hold it up with a zip-tie. I did that for a few months and it worked great. Click here to enlarge

  21. #21
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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    I don't know but you can always just hold it up with a zip-tie. I did that for a few months and it worked great. Click here to enlarge

    Terry, with all due respect, that's just Ghetto rigging it! I like the bracket for the 335i strut bar you made. If I am ever to purchase another OCC, I'd expect nothing else but perfection.
    From all the things I've lost,
    I miss my mind the most!
    Click here to enlarge

  22. #22
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    2 out of 2 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    Terry, with all due respect, that's just Ghetto rigging it! I like the bracket for the 335i strut bar you made. If I am ever to purchase another OCC, I'd expect nothing else but perfection.
    I completely understand. Paypal over $3500 and we'll have the boys at the CNC shop design one for you.

  23. #23
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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    I completely understand. Paypal over $3500 and we'll have the boys at the CNC shop design one for you.

    Yeah, I'd love to, but you'd have to sign a contract which says that 100% of all oil fumes will be captured, that there will be no negative effect on the PCV system, that there will be no carbon build up on the valves and if any of these conditions are violated, you will repay the full amount + any damages.

    That's what I call perfect! Till then, I'll be happy with a proper bracket adapter that attaches the OCC both to the stock strut bar and the M3 one.

    I mean come on now, you mean to tell me that from all the 335i's that you've seen, and from all of your customer cars that you've worked on, not one of them had the M3 strut brace and it did not occur to you that this is something that perhaps your boys at the CNC shop should account for? How hard an this be?

    EDIT: Lets not forget that the BMS OCC is marketed as a unit that overcomes all other units and their design flaws....
    From all the things I've lost,
    I miss my mind the most!
    Click here to enlarge

  24. #24
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    No plans to make an M3 specific strut brace, but I'm sure you can easily modify something to fit. Either grind our bracket, or make your own. FWIW I personally don't really see the point of upgrading the strut braces. Did your OEM one bend? Or is just a looks thing? I'd suggest putting the OEM ones back on so the OCC is a perfect fit. Click here to enlarge

  25. #25
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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    No plans to make an M3 specific strut brace, but I'm sure you can easily modify something to fit. Either grind our bracket, or make your own. FWIW I personally don't really see the point of upgrading the strut braces. Did your OEM one bend? Or is just a looks thing? I'd suggest putting the OEM ones back on so the OCC is a perfect fit. Click here to enlarge

    Don't care about looks. There is a good amount of steering response to be had from the M3 strut brace. The M3 one braces the entire strut tower. The changes can be felt mostly during mid-corner turn adjustments.
    From all the things I've lost,
    I miss my mind the most!
    Click here to enlarge

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