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Stock e30 exhaust size

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    Stock e30 exhaust size

    Planning on doing a cat delete this week I have an 89 325i is 1.75 the size of the pipes before and after the cat ? I need to know what size pipes I should buy

    #2
    measure the pipes...

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      #3
      Originally posted by skunka View Post
      measure the pipes...
      Thanks for your helpfull comment.


      For the OP: Its 1.75"
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        #4
        im also thinking of doing a cat delete. are you putting anything in its place or just straight pipes O.P, i have a magnaflow and its already loud..thinking about putting another magnaflow on lol
        Derek Stanelle
        Hellrot 325is coupe

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          #5
          Originally posted by horse30 View Post
          im also thinking of doing a cat delete. are you putting anything in its place or just straight pipes O.P, i have a magnaflow and its already loud..thinking about putting another magnaflow on lol
          I have a Supersprint on mine ,There are straight pipes in its place right now. The tone/loudness barely changed you can hardly tell it's gone. About to weeks ago I went over a speed bump a little too fast and scraped across it which caused an exhaust leak so around 4kish rpms it's real loud and raspy

          Sent from my SM-G930V using Tapatalk

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