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    • Sound Performance built turbo S54 E46 M3 puts down an impressive 1070 wheel horsepower on a Mustang dyno with ProEFI standalone

      Very nice numbers here from Sound Performance with their turbo E46 M3. Now that Horsepower Freaks is officially dead and people are fighting over what remains the door is open for tuners to take the reigns of the turbo E46 M3 market. Sound Performance appears to be one of those stepping up to fill the void and this is quite a way to do it. How does 1070 wheel horsepower and 830 pound-feet of torque at the wheels on a Mustang dyno sound?


      This is definitely one of the stronger E46 M3's out there as although they exist there is just a handful in the four digit wheel horsepower area. Very impressive and much respect.

      Specs:

      1071whp & 831wtq @ 33psi
      SP Built 10:1 CR S54 engine
      Precision 7675 CEA .96 A/R
      FSR tubular manifold
      ProEFI Standalone EMS

      Dyno video below:


      This article was originally published in forum thread: Sound Performance built turbo S54 E46 M3 puts down an impressive 1070 wheel horsepower on a Mustang dyno with ProEFI standalone started by Sticky View original post
      Comments 27 Comments
      1. DFM's Avatar
        DFM -
        What type of fuel were they using? Just curious. Whatever the fuel is, very impressive results. Well done SP
      1. Sticky's Avatar
        Sticky -
        E85 or some type of race fuel. Either way, respect.
      1. StinkyM's Avatar
        StinkyM -
        That is a beautiful curve.
      1. Sticky's Avatar
        Sticky -
        I'd love to see it on a dynojet but that's damn nice and strong.
      1. leo985i's Avatar
        leo985i -
        That thing is ridiculously wantable!!!
      1. rt turbo's Avatar
        rt turbo -
        Impressive top end, but a wiener down low. <200whp at 3600 rpms, 230ish @ 4000rpms. Not my cup of tea. Id rather have 550whp by then. Still impressive numbers.
      1. Mikecoupe's Avatar
        Mikecoupe -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        E85 or some type of race fuel. Either way, respect.
        Do you have permission from SP to make this thread?
      1. Black Sheep's Avatar
        Black Sheep -
        SP was going to do installs for the HPF kits in the midwest at one point. So most likely that is a HPF kit on there...
      1. Brey335i's Avatar
        Brey335i -
        Graph looked impressive until I saw it started at 3600 rpm. Now it's not so much anymore.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Mikecoupe Click here to enlarge
        Do you have permission from SP to make this thread?
        Do you see SP complaining? I don't.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Brey335i Click here to enlarge
        Graph looked impressive until I saw it started at 3600 rpm. Now it's not so much anymore.
        There's going to be a significant low end sacrifice with the turbo size needed to reach these power levels on a 3.2 liter.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Black Sheep Click here to enlarge
        SP was going to do installs for the HPF kits in the midwest at one point. So most likely that is a HPF kit on there...
        Definitely, most likely modified though.
      1. inlineS54B32's Avatar
        inlineS54B32 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        There's going to be a significant low end sacrifice with the turbo size needed to reach these power levels on a 3.2 liter.
        This - and who spends time in these RPM areas driving an M3; furthermore, I doubt streetability was what they were shooting for. Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by inlineS54B32 Click here to enlarge
        This - and who spends time in these RPM areas driving an M3; furthermore, I doubt streetability was what they were shooting for. Click here to enlarge
        Yep raw power
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        Great numbers. Congrats to Sound Performance! 10:1 compression Click here to enlarge Almost sounds like an N54 heh
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Almost sounds like an N54 heh
        BMW I6's should have a general similarity. But no N54 sounds like this thing at 8k rpm Click here to enlarge
      1. DFM's Avatar
        DFM -
        Click here to enlarge Originally Posted by dzenno@ProTUNING Freaks Click here to enlarge
        Almost sounds like an N54 heh
        keyword almost
      1. inlineS54B32's Avatar
        inlineS54B32 -
        I wonder why these guys didn't just use the N54/N55 as opposed to that old technological iron block garbage S54. Click here to enlarge

        Sorry - had to say it, and of course this is a joke.
      1. Mike@VAC's Avatar
        Mike@VAC -
        Click here to enlarge Originally Posted by inlineS54B32 Click here to enlarge
        I wonder why these guys didn't just use the N54/N55 as opposed to that old technological iron block garbage S54. Click here to enlarge
        ^ this :-/
      1. Flinchy's Avatar
        Flinchy -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        There's going to be a significant low end sacrifice with the turbo size needed to reach these power levels on a 3.2 liter.
        i don't have anything to compare a 7675 to haha... but going by the vargas stage 3 graph.... how MUCH bigger than twin GTX28's is it? the n54 makes more power on the big twins all the way to a bit over 5000 rpm before tapering off a lot

        then this one shoots off like a rocket between 5-5500 haha

        then again, aren't the stage 3's predicted to be able to make power (regardless of an other limiting factor lol) up to the 900 odd range?