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    • Motorsport 24 developing new aftermarket S65 headers for the E9X (E90,E92,E93) M3 - Gains of 27 horsepower claimed

      German racing component manufacturer Motorsport 24 is in the middle of reinventing the wheel with their newly developed headers for the S65. After a year of research, the M24 team is confident that they have improved upon the already stellar original BMW design. While these headers are still in the middle of optimization and development, initial testing has shown an increase in power as well as a substantial reduction in exhaust gas temperatures.

      M24 will be releasing a direct-fit road car version of these headers, meant to fit on any street exhaust system, as well as a true racing version for S65 V8 engines. IND is M24's North American distributor, and we all felt very fortunate to see preview photos of these early prototypes. Please stay tuned for updates!




      This article was originally published in forum thread: Motorsport 24 is developing new S65 headers! started by Nate@IND View original post
      Comments 44 Comments
      1. lughed's Avatar
        lughed -
        Click here to enlarge Originally Posted by flipm3 Click here to enlarge
        M24 doesn't seem to skimp out on any of their products. It looks like these headers have the same path as the OEM, but it looks like noticeably larger primaries and a slightly different collector design.

        I am DEFINITELY looking forward to seeing the dyno graphs of these headers.
        Larger primaries usually result in a higher power band and less or thinner torque band. The graphs will be interesting to look at being a near mirror design of the the oem but with small "revisions" of the M24 headers.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by lughed Click here to enlarge
        A crimp of only 1/4" effectively decreases the diameter of a pipe a good amount. Removing the crimps is a big improvement by itself.
        I think the crimp due to how they are produced is a minor thing considering the header design is widely regarded as superior to even the S85's and a reason why the S65 does the HP per liter it does.
      1. evolve's Avatar
        evolve -
        I hope that production models are made to a higher standard.
        The collectors don't look like they belong on a 4k header.

        Also wish companies would not micropolish/sand blast the headers.
        You spend hours welding them together and then hide the fantastic colours and sight of the actual welds.

        27hp.... Mmmm...... Thats alot to gain over what is already a good header.

        I have seen the tests of something that looks way nicer, has a proper merge collector, has equal length and larger longer primaries than stock.... And it didn't give anywhere near 27hp.
        Maybe with an exhaust.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by evolve Click here to enlarge
        I hope that production models are made to a higher standard.
        The collectors don't look like they belong on a 4k header.

        Also wish companies would not micropolish/sand blast the headers.
        You spend hours welding them together and then hide the fantastic colours and sight of the actual welds.

        27hp.... Mmmm...... Thats alot to gain over what is already a good header.

        I have seen the tests of something that looks way nicer, has a proper merge collector, has equal length and larger longer primaries than stock.... And it didn't give anywhere near 27hp.
        Maybe with an exhaust.
        @evolve, you here as a guest vendor. Which means you do not have free reign to post anywhere and wherever you want. Especially not in other vendors threads when it does not concern you as the account is specifically made to address incorrect issues that may concern your product.

        Please looks the guest vendor rules over again: http://www.bimmerboost.com/showthrea...dor-Guidelines
      1. evolve's Avatar
        evolve -
        Sorry for putting up my view on something that I have a lot of experience on.

        Won't post any further on this thread.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by evolve Click here to enlarge
        Sorry for putting up my view on something that I have a lot of experience on.
        It isn't that your views aren't appreciated, it is that you are on a limited account as a vendor and are posting in another vendor's thread. Until these are out and with dyno's speculation is unwarranted as you have no experience with these particular pieces. Thanks.
      1. LostMarine's Avatar
        LostMarine -
        in for updates Click here to enlarge
      1. lughed's Avatar
        lughed -
        Click here to enlarge Originally Posted by evolve Click here to enlarge
        Sorry for putting up my view on something that I have a lot of experience on.

        Won't post any further on this thread.
        Your post sounded like pure hate. Hiding welds and polishing is personal preference and has nothing to do with experience. If the headers work, then who cares if they "don't look like they belong". Form follows function (the experienced knows this)and the quality looks very good. I also have experience and i do agree, the 27 hp gains seems unrealistic but i will let the data sheets tell that story.
      1. Nate@IND's Avatar
        Nate@IND -
        Thanks for the support guys. The final testing starts next week. Good or bad I will post the results when I get them from Germany.
      1. LostMarine's Avatar
        LostMarine -
        if you can show unquestionable gains, im jumpin on the buyer list Click here to enlarge
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Any results for these headers?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 0-60Motorsports Click here to enlarge
        Any results for these headers?
        Not yet.
      1. fundahl's Avatar
        fundahl -
        Definitely not something to try your first time out with a TIG.....

        Lets see some charts!
      1. skoot3r's Avatar
        skoot3r -
        bump for updates?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by skoot3r Click here to enlarge
        bump for updates?
        No updates...
      1. LostMarine's Avatar
        LostMarine -
        still no updates!? must not be worthwhile
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by LostMarine Click here to enlarge
        still no updates!? must not be worthwhile
        Not that, this is just a German company with little representation in the USA.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        Hopefully a set of these will find its way onto a customers car soon enough...
      1. EUGENE-Taiwan's Avatar
        EUGENE-Taiwan -
        the only thing is that you will need to get your car retuned for the 27 hp gain I believe
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by EUGENE-Taiwan Click here to enlarge
        the only thing is that you will need to get your car retuned for the 27 hp gain I believe
        To maximize it, certainly.