• Over 500 whp already out of the 2015 BMW F80 M3? Yep. BMS JB4 tuned S55 turbo inline-6 ethanol (E85) testing shows 539 wheel horsepower

      So, um, yes, you can say the new F80 M3 and F82 M4 respond pretty well to bolt on modifications. Journalists are still getting their hands on stock cars to test but Burger Tuning (BMS) already has the car over 500 wheel horsepower. This is not too surprising as with a mild bump in boost on a beta Stage I BMS tune the car already showed 479 horsepower at the wheels. Now with some further refinement to the tune and some ethanol (E85) the result is over 500 whp.

      Here are the details in the words of Terry@BMS:




      Hey guys,

      Got back from a couple hours of dyno tuning and came back with some interesting results. This car definitely likes E85...

      The JB4 now has full electronic wastegate control in addition to the fuel mass control & CANbus, paving the way for E85 testing. The test car is our 2015 DCT M3, 100% stock with a JB4, with ethanol mixed with 91 octane at 30-50%.

      I've been running E30 for the last week on a tune that ramps up to around 25psi and I've been very impressed with it. On the dyno today running that same trim resulting in a very consistent ~510whp / ~510wtq results. Although the turbo holds boost to redline it looks like shifting around 6000 rpm will result in the best acceleration results as power noses off above that.

      While I had it strapped down I decided to explore more aggressive power levels. Added a little more E85 and went on an hour long adventure through many different curves and tweaks. Finally arrived at a 28psi peak tune which yielded ~540whp / ~575wtq. I've not tested this much on the street so we'll have to see how viable it is. But this just goes to show you how much room was left on the table for tuning with this platform.

      This car is an animal.














      This article was originally published in forum thread: 2015 M3 JB4 Ethanol Testing & Dyno started by Terry@BMS View original post
      Comments 261 Comments
      1. StinkyM's Avatar
        StinkyM -
        Oh emmmm geeee
      1. Zee's Avatar
        Zee -
        540 with just a tune and no exhaust, down pipe, intake, intercooler etc OMG!!! This car is going to run 10s! TERRY YOU ARE THE MAN!
      1. fastgti69's Avatar
        fastgti69 -
        I knew this was coming when you asked if my clutch was installed. Great work Terry! This car is making 540whp and 575 wtq with just some e85. I can't imagine with some downpipes and intakes possibly with meth. Maybe 580whp looks like a plausibility.

        How is the LPFP and HPFP doing so far?
      1. VargasTurboTech's Avatar
        VargasTurboTech -
        Goes to show what you can do when you dont have the gates blowing open from back pressure, I cannot imagine those turbos are any bigger than RB's or our stage 2's, prob just a better AR ratio and the EWG aren't getting pushed open. Quick question I would have to look, but doesn't this car have a much higher rev limit, that pretty much looks like a N54 dyno graph stopping at 7K
      1. Terry@BMS's Avatar
        Terry@BMS -
        There is definitely going to be a lot more potential with the platform as additional hard parts are developed. But as far as our development car goes no plans to do anything else to it. A 100% stock car with E50 making 540whp will suit me just fine. Click here to enlarge
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
        Goes to show what you can do when you dont have the gates blowing open from back pressure, I cannot imagine those turbos are any bigger than RB's or our stage 2's. Quick question I would have to look, but doesn't this car have a much higher rev limit, that pretty much looks like a N54 dyno graph stopping at 7K
        Yes it will rev out to 7500rpm or so. When I saw how power was dropping off started just letting off around 7000rpm. No point in beating on it up there when it isn't making any more power.

        On the turbos I think they just flow more personally. Then again it's 15k more than an N55 what do you expect. Click here to enlarge
      1. VargasTurboTech's Avatar
        VargasTurboTech -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Yes it will rev out to 7500rpm or so. When I saw how power was dropping off started just letting off around 7000rpm. No point in beating on it up there when it isn't making any more power.

        On the turbos I think they just flow more personally. Then again it's 15k more than an N55 what do you expect. Click here to enlarge
        That tells me the turbos are just about tapped, you are able to hold more boost to redline because of the EWG's, but up top BP is becoming an issue just like the N54
      1. dzenno@PTF's Avatar
        dzenno@PTF -
        This is exciting! I did predict these numbers but I didn't predict them on bone stock hardware with E85. Do you have timing corrections and fuel pressure logging here?
      1. Terry@BMS's Avatar
        Terry@BMS -
        Yes definitely was reaching the limits up top. At least for a 100% stock car. Maybe with a modified exhaust, IC, etc, there is more in there. If anyone shows up to the dyno with hard parts I'll be happy to help them explore that.
      1. VargasTurboTech's Avatar
        VargasTurboTech -
        Ps, if I didn't state for the record. This is bad ass...Click here to enlarge Very excited to develop a turbo upgrade for these
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by dzenno@PTF Click here to enlarge
        This is exciting! I did predict these numbers but I didn't predict them on bone stock hardware with E85. Do you have timing corrections and fuel pressure logging here?
        With the F series instead of ignition corrections per cylinder you get something called ignition roughness per cylinder. It's actually a more useful value for tuning. I've collected a lot of data but we are only sharing the basics for now.
      1. bobS's Avatar
        bobS -
        Wow! Crazy results! I was just looking at one of these at the dealer today. Nice car....
      1. BuraQ's Avatar
        BuraQ -
        Terry, what are you doing in terms of keeping the DCT in check from slipping, are you using the same method of sending an offset signal to the TCU as you did with the 335is DCT from what was understood, or was this incorrect ?
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by BuraQ Click here to enlarge
        Terry, what are you doing in terms of keeping the DCT in check from slipping, are you using the same method of sending an offset signal to the TCU as you did with the 335is DCT from what was understood, or was this incorrect ?
        So far we've not had to do anything special for it. I'll keep an eye on it though.
      1. 135pats's Avatar
        135pats -
        Wow. Terry you are on a roll this week man!

        That car must be FAST in that trim.
      1. bmw335iguy's Avatar
        bmw335iguy -
        In for new vbox 60-130 and 1/4 mile times. Awesome results T!
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
        Ps, if I didn't state for the record. This is bad ass...Click here to enlarge Very excited to develop a turbo upgrade for these
        Agreed. Will be interesting with the new intercooler setups as well and the way the solenoid and car works.
      1. bobS's Avatar
        bobS -
        So if the power is dropping off at 7k and it seems like the turbos are tapping out... What is a safe tune to run on this car? The power you made is great but this tune would be a turbo killer...am I right?
      1. Irishace's Avatar
        Irishace -
        I want one Click here to enlarge
      1. Legionofboom's Avatar
        Legionofboom -
        The E9x M3s are going to become obsolete. Congrats Terry