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    • Evolve Automotive E39 M5 S62 V8 results with 'medusa' style 4-1 headers versus stock headers - +30 hp

      Headers are a well known area to gain power / torque on the S62 V8 in the E39 M5. The stock S62 V8 headers are not exactly BMW M's best work essentially re-using the 4.4 liter M62 V8 design out of the E39 540i. How restrictive is this design? The dynograph provided shows quite a bit as the Evolve headers show significant gains through the curve especially up top in the rev range. Gains are as large as approximately 30-40 horsepower and 29-37 pound-feet of torque.

      Take a look at the stock design versus the Evolve design below along with the dynograph. Combine these headers with a tune and it will feel like a whole new car.






      This article was originally published in forum thread: Evolve Medusa Headers vs Stock Headers Pictures started by Imran@Evolve View original post
      Comments 19 Comments
      1. Group.america's Avatar
        Group.america -
        Good god, I now have 3 BMW's in the drive but the one I really wanted was an E39 with an S62 ..... these headers and a S/C and we would be right as rain

        Will these headers be fitted for the M62 540i ???
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        Good god, I now have 3 BMW's in the drive but the one I really wanted was an E39 with an S62 ..... these headers and a S/C and we would be right as rain

        Will these headers be fitted for the M62 540i ???
        Good question regarding the M62.
        @evolve @Imran@Evolve
      1. Group.america's Avatar
        Group.america -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Good question regarding the M62.
        @evolve @Imran@Evolve

        My poor old beast does not like it when I put in the octane boosters... well it likes it at the time and now weeks later he is a grumbling old bad tempered beast... would love to add some headers, new rear end exhaust etc when I finish my N20 project just to see where we can go but as of today my car really hated going over 80mph Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        My poor old beast does not like it when I put in the octane boosters... well it likes it at the time and now weeks later he is a grumbling old bad tempered beast... would love to add some headers, new rear end exhaust etc when I finish my N20 project just to see where we can go but as of today my car really hated going over 80mph Click here to enlarge
        Octane boosters can clog injectors.
      1. Group.america's Avatar
        Group.america -
        Yeah Stick, already cleaned them once in the last 3 months... job for tomorrow
      1. benzy89's Avatar
        benzy89 -
        It's pretty surprising that the S62 headers are so bad after seeing how good the S65 headers are.... Big difference in the tech that's been released though and @evolve continues to kill the BMW aftermarket scene
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        It's pretty surprising that the S62 headers are so bad after seeing how good the S65 headers are.... Big difference in the tech that's been released though and @evolve continues to kill the BMW aftermarket scene
        The S65 headers are likely the best headers BMW has ever done for a street car. Keep in mind the S65 puts out more power to the wheels with 1.0 liter less displacement than the S62. So, really, not surprising the S65 headers are much better considering the HP per liter difference and how much more BMW got out of less.
      1. StinkyM's Avatar
        StinkyM -
        Why can't these be offered for the E46 M3? Or at least something very similar? Extremely impressive gains and excellent quality.
      1. 0-60Motorsports's Avatar
        0-60Motorsports -
        Click here to enlarge Originally Posted by StinkyM Click here to enlarge
        Why can't these be offered for the E46 M3? Or at least something very similar? Extremely impressive gains and excellent quality.
        I looked into this with @evolve the SS Stepped headers make perfect power and as EVOLVE are already an SS dealer......
      1. Imran@Evolve's Avatar
        Imran@Evolve -
        E46 M3 headers - SS Stepped V1 with V1 Section 1 is already pretty awesome. They did an amazing job on those.

        S65 headers - perfection for NA car. SS tried many different designs and gained nothing. If they say there is nothing to be gained there on a NA application I tend to believe them. This is why you have seen no data for any of the other headers out there. We are going to test something for boosted cars very soon to see if it makes a difference.

        S62 headers - in theory should fit a 540i with some custom fabrication on the section 1 side.
      1. AlexQuattro's Avatar
        AlexQuattro -
        No wonder the gains are so impressive, those stock headers are $#@! flow wise.
      1. BigM62's Avatar
        BigM62 -
        Click here to enlarge Originally Posted by Group.america Click here to enlarge
        Good god, I now have 3 BMW's in the drive but the one I really wanted was an E39 with an S62 ..... these headers and a S/C and we would be right as rain

        Will these headers be fitted for the M62 540i ???
        I am trying to see about a group buy from Motorsports Down Under They were $5000 and now $2000. Hopefully even less with group buy.
        http://www.motorsportsdownunder.com/catalog/i11.html


      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by StinkyM Click here to enlarge
        Why can't these be offered for the E46 M3? Or at least something very similar? Extremely impressive gains and excellent quality.
        There are E46 M3 header options but that header is designed better to begin with. The main thing with the E46 M3 header is to delete the integrated cat at least for US models.
      1. benzy89's Avatar
        benzy89 -
        Click here to enlarge Originally Posted by StinkyM Click here to enlarge
        Why can't these be offered for the E46 M3? Or at least something very similar? Extremely impressive gains and excellent quality.
        Supersprint is the most well known for E46 M3 headers, but you can also buy Agency Power or eBay headers.... Someone on e46fanatics showed that the eBay headers even yielded nearly an average 20 HP/20 TQ, just no guarantees how long they'll last after abuse from the elements or several heat cycles.
      1. StinkyM's Avatar
        StinkyM -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        There are E46 M3 header options but that header is designed better to begin with. The main thing with the E46 M3 header is to delete the integrated cat at least for US models.
        This I know, but looking at the merge collector and piping diameter. It's a much better design than what we have on the market for the E46. That merge simply shows a vast amount of tuning was put into this header. The length of the header also tells another story. There isn't an E46 M3 header on the market designed like this. Not even close, although the Epic and SS headers are close, still not what we're seeing here.
      1. StinkyM's Avatar
        StinkyM -
        Click here to enlarge Originally Posted by benzy89 Click here to enlarge
        Supersprint is the most well known for E46 M3 headers, but you can also buy Agency Power or eBay headers.... Someone on e46fanatics showed that the eBay headers even yielded nearly an average 20 HP/20 TQ, just no guarantees how long they'll last after abuse from the elements or several heat cycles.
        I already have AP headers which imo are just a basic copy of the euro header design. There's so much more to a header design that makes more power and has better flow characteristics than just removing cats and calling it a day. I'm 100% positive more power can be had over the majority of headers for the E46.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by StinkyM Click here to enlarge
        I already have AP headers which imo are just a basic copy of the euro header design. There's so much more to a header design that makes more power and has better flow characteristics than just removing cats and calling it a day. I'm 100% positive more power can be had over the majority of headers for the E46.
        Longer tubes may provide some more power (possibly with a sacrifice elsewhere in the band) but we're talking about eeking a few horses at that point. Not worth the investment with the options that already exist.
      1. BigM62's Avatar
        BigM62 -
        Awesome looking headers and great gains. Must find shop to do custom install.
      1. undercover's Avatar
        undercover -
        contact us we can possibly work something out for you on the headers
        undercoverperformanceinc@gmail.com