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Thread: Angry Ass: E34 M5 variable resonance plenum actuator

  1. #1
    Join Date
    Jan 2009
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    CO
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    2,996
    My Cars
    '91 M5

    Angry Ass: E34 M5 variable resonance plenum actuator

    With the OEM S38B36/B38 vacuum actuator being no longer available from BMW and with it being one of the key components of the variable resonance plenum that gives the S38B36 & S38B38 added power and torque we at Angry *** Solutions decided to develop a replacement. Our unit uses all new components manufactured in Germany or the USA including a mil-spec hard anodized 6061 aluminum machined rod, self-lubricating rod end, and modern vacuum diaphragm assembly. One of the many parts we're developing for our composite variable resonance plenum.

    To ensure we are offering the best parts available we developed a test rig for accelerated durability testing of the actuators. Our requirement is 365,000 cycles or the equivalent of 100 activations a day for 10 years.

    Take a look at testing on our new YouTube channel: https://www.youtube.com/watch?v=ZSFI...ature=youtu.be

    We require no core as this is a brand new part and we will be offering the first 5 early adopters the units at $175.00. Contact us through our website if you have any questions at www.AngryAssSolutions.com or if you would like to place an order.



    Last edited by BleedsBlue; 05-09-2019 at 10:52 AM.
    -Brent
    Hit me up about www.angryasssolutions.com

  2. #2
    Join Date
    Nov 2006
    Location
    Horsham, PA
    Posts
    466
    My Cars
    e34 540ia/e32 740il
    This is freakin cool! I love that you guys are developing parts for the e34

  3. #3
    Join Date
    Nov 2006
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    Horsham, PA
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    466
    My Cars
    e34 540ia/e32 740il
    Side note, when's that m60 supercharger kit coming ��

  4. #4
    Join Date
    Jun 2007
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    Great White North
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    Cool. wish I could participate but alas my M is not in working state yet.

    I'm guessing these commonly fail?

  5. #5
    Join Date
    Jan 2010
    Location
    Ambler, PA
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    110
    My Cars
    1995 540i/6
    Quote Originally Posted by m60power View Post
    Side note, when's that m60 supercharger kit coming ��
    Second that motion

  6. #6
    Join Date
    Jan 2009
    Location
    CO
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    2,996
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    '91 M5
    Quote Originally Posted by m60power View Post
    This is freakin cool! I love that you guys are developing parts for the e34
    Thank you!

    Quote Originally Posted by m60power View Post
    Side note, when's that m60 supercharger kit coming 😈
    Quote Originally Posted by JThomp33 View Post
    Second that motion
    We will not forget the 540! We respect the HP per $ potential a whole lot.

    Weíre wrapping development on our improved, second-gen PCV delete plate, a prerequisite for FI M60s. We have a in progress for the S38, but the M60 development can slot in earlier depending on demand!

    Quote Originally Posted by zubbie View Post
    Cool. wish I could participate but alas my M is not in working state yet.

    I'm guessing these commonly fail?
    PM one of us if youíre ever in need of M-specific help!

    The part does fail commonly, though Iím not sure about frequency/mileage intervals. Typically, the vacuum diaphragm is what fails. The real rub is that the part has been NLA for awhile, and until now there hasnít been a replacement option using all-new parts.

    Particularly on a B36, itís very noticeable when this actuator is kaput. These cars already lack low-end grunt at full factory curb weight, compared to the V8s, and without this little doodad the effect is drastically exacerbated.
    -Brent
    Hit me up about www.angryasssolutions.com

  7. #7
    Join Date
    Jun 2007
    Location
    Great White North
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    11,281
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    various
    Quote Originally Posted by BleedsBlue View Post
    The part does fail commonly, though Iím not sure about frequency/mileage intervals. Typically, the vacuum diaphragm is what fails. The real rub is that the part has been NLA for awhile, and until now there hasnít been a replacement option using all-new parts.

    Particularly on a B36, itís very noticeable when this actuator is kaput. These cars already lack low-end grunt at full factory curb weight, compared to the V8s, and without this little doodad the effect is drastically exacerbated.
    I'm pretty sure I need one as you describe the cars exact performance before it got garaged. Glad I have a source.

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