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Thread: m50 manifold conversion for FI

  1. #26
    Join Date
    Oct 2004
    Location
    DeWitt, Michigan
    Posts
    6,080
    My Cars
    '97 540i/6, '97 328i
    Quote Originally Posted by Butters Stoch View Post
    The big gains are at higher RPM. Your turbo car will feel fast, well cause its a turbo car. But the m50 flows an ass load more air than the m52, so at higher rpm, your power will continue to rise where your m52 manifold is choking in comparison. Let er eat ! Air and fuel.
    Thanks!

  2. #27
    Join Date
    Feb 2011
    Location
    Virginia
    Posts
    3,043
    My Cars
    97' m52 turbo
    Quote Originally Posted by wgknestrick View Post
    Wow, shipping is only $190USD
    Lol, yea...

    I haven't been able to find a reasonably price reinforced manifold in the US

    - - - Updated - - -

    Quote Originally Posted by vollosso View Post
    To help with reducing leaks over time install nipples in stiffer areas. Less flex, less leak.

    Yes the m50 swells
    .

    I like installing nipples at the front corner between the ribs. Epoxy with npt. Use a step-less bit and then run the npt fittings in with a drill.


    Sent from my iPhone using Tapatalk
    Yes they do,

    I've seen mine completely flex at an idle rev. Can't imaging what it looks like under pressure

  3. #28
    Join Date
    Feb 2018
    Location
    Orlando, Florida
    Posts
    40
    My Cars
    '86 BMW 535 (m52)
    Quote Originally Posted by Butters Stoch View Post
    Liked ? Past tense ?




    Sent from my E6782 using Tapatalk
    That's an awesome setup for meth! Did you do it all DIY? Also at what power point would this kind of setup be worth it?

  4. #29
    Join Date
    Feb 2011
    Location
    Virginia
    Posts
    3,043
    My Cars
    97' m52 turbo
    Quote Originally Posted by E34Dave View Post
    That's an awesome setup for meth! Did you do it all DIY? Also at what power point would this kind of setup be worth it?
    Yup

    Butters has one the coolest manifolds I've seen on heya

  5. #30
    Join Date
    Jan 2006
    Location
    Oakhurst, CA
    Posts
    6,668
    My Cars
    96 M3 97 M3 98 M3 99 M3
    I used the reboot engineering M50 aluminum adapter. The OEM rubber neck was on this one but I've also used MaxPSI hoses too. http://rebooteng.com/parts/m50-intake-manifold-fitting/



    Last edited by Braymond141; 02-26-2018 at 08:13 PM.

  6. #31
    Join Date
    Jan 2021
    Location
    Ny
    Posts
    73
    My Cars
    94e36, 00e39 532it turbo
    Turbo car, swapped m52 to m50 intake. Went from 450hp at 20 psi to 530 at 21 psi? (Somthing like that)

    Seems like the m50 is well worth it if your boosted.

    https://youtu.be/FsqZiWxLI8M

    Tips for m50 manifold + f/I.

    https://youtu.be/cYoU6axywXU
    Last edited by Sio2crew; 05-01-2022 at 11:45 AM.

  7. #32
    Join Date
    Feb 2017
    Location
    Raleigh, NC
    Posts
    288
    My Cars
    1998 M3 643whp
    Quote Originally Posted by Braymond141 View Post
    I used the reboot engineering M50 aluminum adapter. The OEM rubber neck was on this one but I've also used MaxPSI hoses too. http://rebooteng.com/parts/m50-intake-manifold-fitting/



    These are pretty good,

    If you get the RallyRoad version, make sure you ditch the zip tie that comes with it.

    https://rallyroad.net/collections/fo...ld-icv-fitting

    Replace Zip Tie with a skinny SS Hose clamp. My zip tie stretched and allows the barb O-Ring to break seal when the barb gets to a certain angle inside the ID of the M50 port. It's due to only having 1 attachment holding the thing together.

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