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Thread: M54 Supercharger Build

  1. #1
    Join Date
    Oct 2018
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    San Jose, Ca
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    BMW 330xi

    M54 Supercharger Build

    Hey all, new to the Bimmer world. Usually a Subaru guy, but I got a project at hand that I want to attempt to finish. Long story short, my lady's father passed away and was in process of a Big Blower Supercharged build in his daughter's BMW 330xi. I was wondering for this kind of build how would the fuel management work? Had anyone converted to a carburetor system in their Bimmer? I wanted to stick with this blower supercharge build as these were his wishes. He basically had everything planned out and mapped out besides the fuel system. The motor is already built and put together. Only thing needed is blower, cooling system, carburetor, and fuel. This crazy guy even fabricated and made a custom intake bracket for the blower so it sits on top of the block. Ill upload a few pics. But thanks in advance to anyone who has some positive input! Thanks!!

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    Last edited by shogun; 10-25-2018 at 07:57 AM. Reason: double posts merged

  2. #2
    Join Date
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    Minnesota eh?
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    That’s interesting. It’s going to need electronic controls to run the ignition system since there are no provisions for a fuel system. Is there any provisions for fuel injectors in the manifold?


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  3. #3
    Join Date
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    1993 325is
    That will be more challenging to carburetor then it will be to stay full EFI. Dont forget that along with spark you also need to control those cams

  4. #4
    Join Date
    Jun 2014
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    1997 328 convertible
    You can get a Holley fuel injection set up that looks like a carb and should bolt right up, then you need an aftermarket ECU to run it all.

  5. #5
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    Sounds good. I’ll get in contact and look up Holley.

    - - - Updated - - -

    I was actually looking around the garage for any more parts. I saw a couple of fabricated adapters. I’ll be taking a look if any of those are related to fuel.

  6. #6
    Join Date
    Apr 2006
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    Minnesota eh?
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    86 325es
    Quote Originally Posted by Groshuk View Post
    You can get a Holley fuel injection set up that looks like a carb and should bolt right up, then you need an aftermarket ECU to run it all.
    That is an excellent idea and should work well controlled by any standalone.

    For the cams I would honestly just lock the vanos with a vanos elimination kit from VAC, or just put the cams, sprockets, vanos unit, and valve cover from an m52 or s52.


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  7. #7
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    New England
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    F90 M5; E36 M3 Turbo
    That is a crazy project!

  8. #8
    Join Date
    Oct 2018
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    BMW 330xi
    just looked up the Holley efi fuel system. Thing looks perfect and easy to drop in in place of a carb. Comes with the electrical stuff needed for tuning as well. Thanks for that!

    - - - Updated - - -

    Yeah, definitely a timely and a one of a kind build. That man always loved his old school muscle

  9. #9
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  10. #10
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    I would never have believed it if not for the pictures. Where's the water pump? Going to run an external electric pump or something?
    ASE and BMW Master Certified Technician

  11. #11
    Join Date
    May 2017
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    Owings, Md
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    1998 328i
    That's gonna look like a Rat Fink drawing come to life (said as a compliment)

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