• E46 M3 and S54 turbo options set to open up thanks to ProEFI and the Pro128 computer

      Let's be honest, the S54 turbo scene has been dominated by Horsepower Freaks. That is not necesassrily a bad thing as they are a high quality option. However, there have not been any tuning options for those wanting to do their own turbo kit or perhaps go in a different direction. Well, ProEFI may be shaking things up considerably. ProEFI has released some initial details of their E46 M3 turbo setup using the Pro128 computer.

      As most of you know, the hardest part of doing a forced induction setup on a naturally aspirated BMW M motor is the tuning. Up until now HPF and their AEM setup was the only consistent solution for a turbo. Jason as ProEFI has demonstrated that an E46 M3 with a custom turbo setup (GT40) and a Pro128 computer has hit 573 whp at 9 psi on stock internals. Impressive? Yes.

      What are the specs on ProEFI's turbo M3? As follows:

      • GT40 Turbo with FMIC
      • E85

      • Flex Fuel Sensor allows for mixes of pump gas or E85

      • Traction Control

      • Stock clutch, exhaust, and intake manifold

      • 1000 cc injectors


      What does this all mean? Well, it means the S54 turbo market may be set to open up. This will no doubt drive costs down and allow for greater variety. Pricing information and further details will come for now we are incredible excited about the potential. Check out the video below:



      This article was originally published in forum thread: ProEFI-tuned Turbo M3 started by spdu4ea View original post
      Comments 313 Comments
      1. dreikraft's Avatar
        dreikraft -
        Click here to enlarge Originally Posted by Jason S. Click here to enlarge
        We haven't made any pulls on Jim's car with pure E85, it was just over half of a mix (62%), the 15psi numbers would hold true for pump fuel, we didn't push the tune at 15psi at all....maybe 10 less hp???
        are there plans to further tune Jim's car at the moment? (100% e85, etc)

        also how does mixed fuel fueling work in real world situations?
        say for example Jim's car is at a pump with both 91 and e85
      1. Apex Speed Technology's Avatar
        Apex Speed Technology -
        I STRONGLY disagree with this statement. The stock ECU's are WAY faster than any of the aftermarket ecu's out there, they have to be for emissions control. Put a scope on an engine and lock your cam, crank, and one of your ignition channels and run the thing under load at 8k...you'll see that the factories precision in crank position DESTROYES anything aftermarket (except ours...because it is an O.E.M. ecu). I have done this test with several aftermarket ecu's. Remember, emissions requirements mandate misfire detection throughout the rpm range on the newer vehicles, and they can't do that without being able to detect crank acceleration at the moment of ignition on EACH cyclinder. The controllers are inexpensive because they make millions of pieces at a time, not because they are built cheap.
        Careful of your claims, Jason, you're generalizing. Things like the Cosworth MQ12 and Bosch MS4 series do have high-resolution crank inputs for cylinder to cylinder missfire detection, as well as dedicated FPGA's for event scheduling. In fact, many high-end ECUs have twin 565's plus FPGA and many times the RAM of the ECU you are using. I invite you to do your scope tests for timing with any high-end ECU.

        I would also back down on your claim about "destroying" anything aftermarket. OEMs have specifically identified architecture and processing issues with their ECUs for reasons they came to Cosworth for their ECUs. I know this from direct experience working with the design engineers who were working with the factory BMW, Ford and Aston Martin racing programs.

        And being an OEM ECU is NOT a selling point for the aftermarket. In fact, I would argue its a detriment. I know the Mototron 128-pin ECU you are using very well, having worked on projects using them with the US Department of Energy and Argonne National Labs. I think its great that you've developed some tools to improve its utilization, but you should be careful about making technical claims about it unless you've worked with high-end ECUs in an OEM environment. I have read posts around the internet and you seem to be comparing the Mototron 128-pin unit to a lot of lower-end stuff but be aware that there are more powerful, higher end ECUs out there with flexible, fully user configurable software.

        I'm not taking anything away from you, your company or your ECUs. But be careful about your comparative claims. If you can develop a tuning platform that is as open as competitive ECUs from other companies and keep the price point where it is, you will have a great product. I'd be very interested in seeing where you've gone with Motohawk; it may be something we're interested to talking to you more about!

        -Neel
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jason S. Click here to enlarge
        I don't know that a Z4 would be any different than the E46, so it should work fine...what year are we talking?
        It's a different ECU in the Z4 M.
      1. Jason S.'s Avatar
        Jason S. -
        Click here to enlarge Originally Posted by Apex Speed Technology Click here to enlarge
        Careful of your claims, Jason, you're generalizing. Things like the Cosworth MQ12 and Bosch MS4 series do have high-resolution crank inputs for cylinder to cylinder missfire detection, as well as dedicated FPGA's for event scheduling. In fact, many high-end ECUs have twin 565's plus FPGA and many times the RAM of the ECU you are using. I invite you to do your scope tests for timing with any high-end ECU.

        I would also back down on your claim about "destroying" anything aftermarket. OEMs have specifically identified architecture and processing issues with their ECUs for reasons they came to Cosworth for their ECUs. I know this from direct experience working with the design engineers who were working with the factory BMW, Ford and Aston Martin racing programs.

        And being an OEM ECU is NOT a selling point for the aftermarket. In fact, I would argue its a detriment. I know the Mototron 128-pin ECU you are using very well, having worked on projects using them with the US Department of Energy and Argonne National Labs. I think its great that you've developed some tools to improve its utilization, but you should be careful about making technical claims about it unless you've worked with high-end ECUs in an OEM environment. I have read posts around the internet and you seem to be comparing the Mototron 128-pin unit to a lot of lower-end stuff but be aware that there are more powerful, higher end ECUs out there with flexible, fully user configurable software.

        I'm not taking anything away from you, your company or your ECUs. But be careful about your comparative claims. If you can develop a tuning platform that is as open as competitive ECUs from other companies and keep the price point where it is, you will have a great product. I'd be very interested in seeing where you've gone with Motohawk; it may be something we're interested to talking to you more about!

        -Neel

        I guess I should have been more clear... mainstream aftermarket ecu's...motec, aem, fast, BS3, accel, etc...

        And O.E.M. is good... because the ecu's are designed to work in the automotive environment, with real life durability specs, and environmental specs, unlike other 'mainstream' ecu's.
      1. Jason S.'s Avatar
        Jason S. -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It's a different ECU in the Z4 M.

        What's different? The plug it uses? The pinout?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Jason S. Click here to enlarge
        What's different? The plug it uses? The pinout?
        I don't know exactly, don't have hands on experience with it. What I do know that what has worked for the E46 M3 has not worked for the Z4 M's because of the ECU being a different model.
      1. basar13's Avatar
        basar13 -
        ecu is completely different we need a different harness Click here to enlargeClick here to enlargeClick here to enlarge
      1. Jason S.'s Avatar
        Jason S. -
        Click here to enlarge Originally Posted by basar13 Click here to enlarge
        ecu is completely different we need a different harness Click here to enlargeClick here to enlargeClick here to enlarge
        Do you have a picture of the stock ecu plug?
      1. Apex Speed Technology's Avatar
        Apex Speed Technology -
        All of the AEM off the shelf units are capable of controlling the variable cam. It's not realtime current cycle, but they can output a duty cycle based on past cam and crank information to move the cams.
        Not on an S54 or S62. Both of these require dual-driver push-pull setups that aren't supported by AEM. And they HAVE to be closed loop. I've torn quite a few AEMs off of S54's now which had terrible cam timing control.

        -neel
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Apex Speed Technology Click here to enlarge
        Not on an S54 or S62. Both of these require dual-driver push-pull setups that aren't supported by AEM. And they HAVE to be closed loop. I've torn quite a few AEMs off of S54's now which had terrible cam timing control.

        -neel
        I'm much inclined to think you are correct Neel so how is the HPF unit controlling vanos? Is it due to it being modified?
      1. Jason S.'s Avatar
        Jason S. -
        Click here to enlarge Originally Posted by Apex Speed Technology Click here to enlarge
        Not on an S54 or S62. Both of these require dual-driver push-pull setups that aren't supported by AEM. And they HAVE to be closed loop. I've torn quite a few AEMs off of S54's now which had terrible cam timing control.

        -neel
        You have to assign the idle 1/2 and idle 3/4 or idle 5/6 idle 7/8 those are the h-bridges...and yes...very POOR control...but it is there. It is also limited to 1.5 amp circuits but that is a whole other issue completely.
      1. folgrz's Avatar
        folgrz -
        I read somewhere on e90 that you guys may be getting into the n54 platform as well? Click here to enlarge
      1. spdu4ea's Avatar
        spdu4ea -
        proEFI-controlled HPF stage 2.5 on 91octane pump gas alone:

        Click here to enlarge

        That's ~12.5psi with a 15psi "spike" just after spoolup... AEM makes ~555 @ 16psi so again, no big change in peak power but proEFI is definitely smoother (again this graph is smoothing0)
      1. Sticky's Avatar
        Sticky -
        Anyway we could get an overlay?
      1. spdu4ea's Avatar
        spdu4ea -
        AFAIK Jason didn't dyno the AEM on pump-only, and it now has a different fuel system, but I'll try to make a quick & dirty excel comparison with the advertised hpf stage 2.5 graphs tonight
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by spdu4ea Click here to enlarge
        AFAIK Jason didn't dyno the AEM on pump-only, and it now has a different fuel system, but I'll try to make a quick & dirty excel comparison with the advertised hpf stage 2.5 graphs tonight
        Thank you.
      1. spdu4ea's Avatar
        spdu4ea -
        Click here to enlarge
        ProEFI's boost "spike" is pretty apparent at the peak torque (but still less than hpf boost)

        HPF graph based on:

        Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        I wonder if the 4500-5500 gain is due to the VANOS.
      1. spdu4ea's Avatar
        spdu4ea -
        That's where the proEFI boost is smoothly "spiking" to just under 15psi (205 kPa absolute) vs the ~12.5psi it runs 5600-8000...
      1. basar13's Avatar
        basar13 -
        Click here to enlarge Originally Posted by Jason S. Click here to enlarge
        Do you have a picture of the stock ecu plug?

        no, i will try to find and send it to you..