• 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. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Flinchy Click here to enlarge
        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?
        Well on paper sure. Not without a low end sacrifice though obviously.
      1. Flinchy's Avatar
        Flinchy -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Well on paper sure. Not without a low end sacrifice though obviously.
        i mean looking at what they make currently (not TERRIBLE low and mid range), they have a much wider band in comparison
      1. inlineS54B32's Avatar
        inlineS54B32 -
        The car is making 500 horsepower around 5k RPM. I wouldn't call that terrible midrange. I wouldn't even be driving the car in any lower RPM than this to be honest, unless on the HWY.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Flinchy Click here to enlarge
        i mean looking at what they make currently (not TERRIBLE low and mid range), they have a much wider band in comparison
        I would say more condensed power band not wider. Considering they rev much lower it just appears this way to you. We'll see when the N54 hits these power levels... if it does.
      1. Flinchy's Avatar
        Flinchy -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I would say more condensed power band not wider. Considering they rev much lower it just appears this way to you. We'll see when the N54 hits these power levels... if it does.
        well, a couple of thousand RPM lower, with 1000 chopped off up top

        will be interesting to see

        damn not having all the info at hand! ahah
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Flinchy Click here to enlarge
        well, a couple of thousand RPM lower, with 1000 chopped off up top
        That's pretty big...
      1. 600whp S4's Avatar
        600whp S4 -
        n54 is junk