Exhaust Size

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  • Helsinki145
    Noobie
    • Mar 2011
    • 26

    #1

    Exhaust Size

    hey, i'm making a stroked m30 to a 3.8 and wasnt sure if the 2.5 inch exhaust would be big enough for the job.

    Any ideas???
  • digger
    R3V Elite
    • Nov 2005
    • 5912

    #2
    how much hp will it make?
    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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    • Helsinki145
      Noobie
      • Mar 2011
      • 26

      #3
      250 to 300

      Comment

      • nando
        Moderator
        • Nov 2003
        • 34827

        #4
        2.5 or 3" should be fine, if you have no plans on going FI then 2.5" will be easier to keep quiet.
        Build thread

        Bimmerlabs

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