• BMW E9X M3 exhaust system breakdown diagrams - Where the primary and secondary cats are, silencers, what an X-pipe replaces, etc.

      One of the first modifications many people install on an E9x M3 is an performance exhaust system, and while the exhaust system layout of an E9x M3 may seem like elementary knowledge to most fans of the M3, IND constantly gets calls from less experienced enthusiasts who are simply too busy to put their M3 in the air and have a look underneath. I find myself sending clients photos of various exhaust combinations simply to give them an idea of where all the components sit, and how each part can contribute to both power and sound.

      We shot some photos of an Eisenmann exhaust system with a factory x pipe still installed to give people a visual reference to each component that makes up the original x pipe. This way, enthusiasts that are new to the M3 can better understand the components they may be thinking of replacing.







      This article was originally published in forum thread: A quick look at the E9x M3 exhaust system layout. started by Nate@IND View original post
      Comments 29 Comments
      1. LostMarine's Avatar
        LostMarine -
        on the N54 yes. but man, in this car, its needs to SCREAM!
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        on the N54 yes. but man, in this car, its needs to SCREAM!
        i don't know Click here to enlarge "maybe"...if its a daily driver though, definitely not anymore for me
      1. boostedE92M3's Avatar
        boostedE92M3 -
        love catless pipes Click here to enlarge
      1. Mike Benvo's Avatar
        Mike Benvo -
        Nate, Awesome post.

        I tried calling you at your shop the other day. When you have a chance, please give me a ring. Some drunk girl on a bicycle decided to ride into my front bumper and demolish it, so I was interested in some other options you might have available, amongst speaking about other things.

        Thanks!
      1. Irishace's Avatar
        Irishace -
        I am leaning toward X-Pipe and OEM exhaust mod. I want the stealth look of the OEM exhaust out back with more sound paired with a catless x-pipe for the extra ponies.
      1. LostMarine's Avatar
        LostMarine -
        Click here to enlarge Originally Posted by Irishace Click here to enlarge
        I am leaning toward X-Pipe and OEM exhaust mod. I want the stealth look of the OEM exhaust out back with more sound paired with a catless x-pipe for the extra ponies.
        i personally dont like the oem mod sound, but i know plenty do. I agree with the sltealth though, hich is why mine is currently valved. I want to go aftermarket so bad for the weight savings, but i like going from stock sound to balls out in a quick switch
      1. bobS's Avatar
        bobS -
        The valved system in LM's car is great, if the m was my daily, I would run a valved system for sure. It's the best of both worlds. I don't know if I could live with a exhaust other than oem in a daily.

        I currently run the Eisemann race and it's badass, it does drone on the highway but this car is my weekend toy so it doesn't bother me to much. From what I've heard, the oem exhaust mod is a very livable/daily sound.
      1. Irishace's Avatar
        Irishace -
        Ordered an Evolve X-Pipe and sticking with stock rear section for now. I do want the weight savings eventually but I don't want my car to be totally obnoxious.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Irishace Click here to enlarge
        Ordered an Evolve X-Pipe and sticking with stock rear section for now. I do want the weight savings eventually but I don't want my car to be totally obnoxious.
        Valved system... problem solved.