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Thread: M50 high compression turbo build

  1. #1
    Join Date
    May 2015
    Location
    Dallas
    Posts
    45
    My Cars
    1995 BMW 540i

    M50 high compression turbo build

    So I was going to get reground cams to get more valve duration and also was thinking of running 10.5:1 compression ratio with about 5-6 psi boost
    Does this sound like a good idea or are there any downsides to this?

  2. #2
    Join Date
    Apr 2006
    Location
    Minnesota eh?
    Posts
    6,155
    My Cars
    86 325es
    If your going to run E85 you won't have an issue. Could probably be done with 91 or 93 if your careful.


    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
    May 2015
    Location
    Dallas
    Posts
    45
    My Cars
    1995 BMW 540i
    Hmmm I had talked to a few people and I’ve settled on 9:1 compression with premium gas. Next thing I need to look for is finding out if I need to get mega squirt or if the red label ecu can be tuned for turbo.

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