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    • Horsepower Freaks high compression turbo E46 M3 track car spins to 9000 RPM and hits 778 wheel horsepower at 18 psi

      Our previous low compression / Precision 71 turbo powerband in the track M3 took nearly 2 seconds to get back to full power after exiting a turn. Even with that issue, the car was still extremely fast because it had enough power to make up for it. Now we have the best of both worlds with instantaneous power all the time. We're running a smaller 6766 turbo with a high compression 9,000rpm rev limit motor and we're running even more power than we used to. Here's a dyno of the car to 9,000rpm and a short clip of it on the street. For comparisons, I overlaid this dyno with the HPF stage 1 powerband on race fuel.

      Chris.








      This article was originally published in forum thread: HPF Track M3 - 778rwhp @ 18psi Video (9,000rpm dyno) started by HPF Chris View original post
      Comments 25 Comments
      1. dreikraft's Avatar
        dreikraft -
        Click here to enlarge Originally Posted by bmwtek Click here to enlarge
        Why not put this motor in the drag car and run higher boost? This is probably the best thing introduced to the S54 community
        using what for tuning? rocket fuel? the CR is so friggin high... its already making ~40less rwhp than the drag are is at a lil more than half the boost with a fat quasimoto hump in the curve whereas the drag's graph looks like squaw valley.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by bmwtek Click here to enlarge
        Why not put this motor in the drag car and run higher boost? This is probably the best thing introduced to the S54 community
        Because this motor is more about response for the track whereas the drag car is more about peak HP and goes through an auto which can build boost at the line.
      1. HPF Chris's Avatar
        HPF Chris -
        Click here to enlarge Originally Posted by Danny///M Click here to enlarge
        haha i thought so, interested what a 6466 would do compared number wise and reaching the power band on a pump gas street setup

        im putting my options together as im thinking of building a hpf / custom build and have to keep my options open as to what would be the ultimate setup. what do you guys feel this motor can handle on the stock motor safely, im not sure if i should just pull the motor and build the beast or slap on a turbo ride it out and build the motor over the winter hmm

        -Dan
        Dan. Sounds good. We've been running over 700rwhp on the factory engine, over 1,000rwhp on our built motor. Let me know if you need anything.
      1. HPF Chris's Avatar
        HPF Chris -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I have the same question as someone posted previously, how much room is there for more boost?
        This is set up for continuous operation, so we aren't looking to max out boost. It could handle a few more pounds I'm sure.

        Chris.
      1. HPF Chris's Avatar
        HPF Chris -
        Click here to enlarge Originally Posted by dreikraft Click here to enlarge
        using what for tuning? rocket fuel? the CR is so friggin high... its already making ~40less rwhp than the drag are is at a lil more than half the boost with a fat quasimoto hump in the curve whereas the drag's graph looks like squaw valley.
        It's making over 200 less rwhp than the drag car. Remember the drag car makes over 1,000rwhp. It's the auto that makes the numbers appear less. Click here to enlarge

        Chris.