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Single pipe sizing help for tuned M50

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    Single pipe sizing help for tuned M50

    I'm replacing my current setup soon,I'm running euro M50 with 98 octane remap with supersprint headers.

    I want to go single pipe for weight reduction and system simplicity,I'm on doubt between 2.5" or 3", my remap was done in a 3" single m50 car running some similar setup as I do,but some say it might be too much for a 210hp engine
    any opinions or dyno charts on this?

    Help is always welcomed! Thanks in advance!
    “Speed has never killed anyone, suddenly becoming stationary… that’s what gets you.”
    ― Jeremy Clarkson
    Euro 318is M50 build thread

    #2
    I'm going with dual 2", which equals about 2.75", with a slight restriction due to the nature of dual pipes.

    I'd probably go with a 2.5" single though, that's good to about 300 hp I'd think.
    REMEMBER: Be safe and have fun is Rule Number 1.

    The Epic Unbuild of Clint Eastwood

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      #3
      3" is too big. Go with single 2.5" for sure.
      BimmerHeads
      Classic BMW Specialists
      Santa Clarita, CA

      www.BimmerHeads.com

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        #4
        Originally posted by MR 325 View Post
        3" is too big. Go with single 2.5" for sure.
        Will it be enough if I anytime stroke my engine to 250hp aprox?
        Thanks for the income
        “Speed has never killed anyone, suddenly becoming stationary… that’s what gets you.”
        ― Jeremy Clarkson
        Euro 318is M50 build thread

        Comment


          #5
          Originally posted by Aguedae30 View Post
          Will it be enough if I anytime stroke my engine to 250hp aprox?
          Thanks for the income
          yep,
          89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

          new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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