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    • 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 276 Comments
      1. mpowerct's Avatar
        mpowerct -
        Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
        Let the S65 guys talk all they want. Turbo motors always have been and always will be more efficient than an NA motor, now that technology allows a turbo motor car to have similar characteristics to that same NA car, but better in every way there is nothing but win going on. The S65 people are going to be V8 NA purists because that is what they like. The actual facts clearly show which is the better engine. They can close their eyes and scream nah nah nah all they want, it won't change the fact


        Not so sure about that. Will it sound better ? No.... Will it ever redline to 8400 Rpm+ ? No... Will it have better throttle response? No. Better Reliability? No. I could go on. Just because it makes more power which is expected on a new model, does not make it a better engine... They are both Great engines but to say it is superior in every way in just being Click here to enlarge The are some Great Turbo engines, but at the end of the day I know the majority of the most coveted/ best engines are NA... Carrera GT V10, Porsche GT3 4.0, Mclaren F1 V12, Lexus LFA V10, BMW S85 V10, S65 V8, S54 Inline 6. Mercedes Benz V8 M156, Ferrari 458 V8 International Engine of the Year!!! Ferrari V12's, All Lambo V10- V12's, Z06 LS7...I could go on and on. I will give you that they get better gas mileageClick here to enlarge
      1. ezec63's Avatar
        ezec63 -
        Click here to enlarge Originally Posted by The Ghost Click here to enlarge
        Are we looking at the same graph? I see a car with a HUGE power band, with 80% of its power from 4k to redline. It's wide and almost flat. This, IMO, is far preferable vs. making peak hp at redline (single turbo N54, any S65, etc.). Area under the curve is better.

        Attachment 39047
        Yes pretty sure we are ! I mean look at the graph comparing it to the stock run it starts dipping way down towards the end of the run. They even cut the dyno run 500 rpm short because it would make the graph look worse falling even further up to 7500 rpm. Look at what terry said he got his best times short shifting at around 6000rpm instead of the 7500 rpm redline that should tell you everything.

        Sure it will be fast as ^%$# view my previous post I gave credit where its due that amount of torque and midrange horsepower will rocket the lightweight 3500 pound car and with instant dct shifts a great combo. Its just become a much better 335/n54 where all your power is in the midrange and you short shift for best results. Sure its faster and will destroy the s65 unless its supercharged but thats half the fun in the m3 chasing that rush uptop to redline at 8500rpm. Might not be as fast but it sure gets the heart rate going instead of just a big push of torque from 3K rpm and shifting 3,000 rpm later around 6,000rpm. Just a different experience IMO
      1. Brey335i's Avatar
        Brey335i -
        Hey now! There will be no S55 vs. S65 d-measurement competition in this thread without the S54 crew chiming in too!

        Right now I'm imagining this just like the scene from Anchorman.
      1. 135pats's Avatar
        135pats -
        Click here to enlarge Originally Posted by Brey335i Click here to enlarge
        Hey now! There will be no S55 vs. S65 d-measurement competition in this thread without the S54 crew chiming in too!

        Right now I'm imagining this just like the scene from Anchorman.
        No commercials....no mercy.
      1. Legionofboom's Avatar
        Legionofboom -
        Click here to enlarge Originally Posted by dzenno@PTF Click here to enlarge
        Wow neg reps eh? lol cheers to you too
        I gotchu.
      1. bmw335iguy's Avatar
        bmw335iguy -
        I thought Cobb has no plans for the f30's. Are they going to try and release an ap for the new m3/4? If dinan is making piggybacks for the newer bmws it seems bleak for flash tunes in the future on these newer dme's
      1. Zee's Avatar
        Zee -
        Dzenno just came in the thread and pulled a hater move lol.
      1. Tony@VargasTurboTech's Avatar
        Tony@VargasTurboTech -
        Click here to enlarge Originally Posted by Zee Click here to enlarge
        Dzenno just came in the thread and pulled a hater move lol.
        I disagree, correcting the statement that the JB4 has complete fuel control doesn't really seem like a hater move, seems more to me like he just wanted to make sure everyone knew there was not full fuel control, as this might be misconstrued by some. The results speak for themselves, full fuel control or not, the new M3/4 and its S55 are not joke. Period
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by dzenno@PTF Click here to enlarge
        Hey hey hey! You can't just say these two things back to back and expect to walk away slowly lol

        JB4 does not and will never have FULL fuel control or timing control or anything close to it. It is a piggyback and has some indirect control over HPFP pressure and can/does "affect" pulse width. JB like any other piggyback will simply be capped low fuel ceiling wise like piggybacks were on the N54 until actual FULL control becomes available through flash tuning. Until then, people that consider a boost controller a "tune" can have fun with a JB of course. That midrange AFR though Click here to enlarge but I do realize its work in progress, hopefully you can do something to improve that and those throttle closures which you must feel in the car under WOT.
        The tuning is running well and is as smooth as can be. The big issue I have right now is traction control kicking in when running more than around 475whp. After the 1000 mile oil change I'll mount up the drag radials and see what this beast can do.

        On the fuel control everything is setup exactly where we want it. We can change the air/fuel ratio and the fuel trims within reason and are tuning maps within those limits. If Cobb or anyone ever releases flash tuning capability for the platform I'd be all over making a JB4 back end flash map for it. We'll need that anyway for larger than OEM turbos some day so I hope they come through. I've been waiting for them to add a simple speed delimiter to their E series N55 flash tuning suite for almost 2 years now though so I'm not going to hold my breath.

        Hopefully we can get a few of these systems out in the wild in a couple weeks so readers can get a taste of what this platform can do. I expect a lot of simple 2 channel piggybacks will pour out for the platform so we've been taking extra time ensuring the JB4 implementation goes above and beyond what we foresee any competitors offering.
      1. Terry@BMS's Avatar
        Terry@BMS -
        Click here to enlarge Originally Posted by Zee Click here to enlarge
        Dzenno just came in the thread and pulled a hater move lol.
        Between this and the cyl 2-6 timing posts I think he's just trying to get his name out there and stay relevant. A little pathetic but what can you do. When we make posts like this we expect some haters to show up to the party.
      1. B00stGeek's Avatar
        B00stGeek -
        Click here to enlarge Originally Posted by Brey335i Click here to enlarge
        Hey now! There will be no S55 vs. S65 d-measurement competition in this thread without the S54 crew chiming in too!

        Right now I'm imagining this just like the scene from Anchorman.
        S54 makes more power than all of these things... No need to chime it. Just sit back and laugh at the typical s65 vs s55, s65 vs n55, s65 vs n54, s65 vs the world. lol
      1. The Ghost's Avatar
        The Ghost -
        Click here to enlarge Originally Posted by ezec63 Click here to enlarge
        Yes pretty sure we are ! I mean look at the graph comparing it to the stock run it starts dipping way down towards the end of the run. They even cut the dyno run 500 rpm short because it would make the graph look worse falling even further up to 7500 rpm. Look at what terry said he got his best times short shifting at around 6000rpm instead of the 7500 rpm redline that should tell you everything.

        Sure it will be fast as ^%$# view my previous post I gave credit where its due that amount of torque and midrange horsepower will rocket the lightweight 3500 pound car and with instant dct shifts a great combo. Its just become a much better 335/n54 where all your power is in the midrange and you short shift for best results. Sure its faster and will destroy the s65 unless its supercharged but thats half the fun in the m3 chasing that rush uptop to redline at 8500rpm. Might not be as fast but it sure gets the heart rate going instead of just a big push of torque from 3K rpm and shifting 3,000 rpm later around 6,000rpm. Just a different experience IMO
        Click here to enlarge Sure.

        You know that if you have a 540whp car, the car that makes 540whp 2k before redline (with a smooth decent like above) will actually be faster than the one that makes it at redline. It's the same reason that a 520whp RB car is likely faster than a 600whp single turbo N54 (if not, definitely in the same conversation).

        I used to love the Honda (a la S65) powerband for the race car feel, but in reality it is slower hp for hp. I think we are agreeing here. Just a preference thing.
      1. Terry@BMS's Avatar
        Terry@BMS -
        I don't get the obsession with higher RPM personally. It's not like this thing is a diesel maxing out at 4000rpm. There is plenty of RPM to hold gears when shifting at 6000rpm. Lower RPM is easier on the engine and if you want to hold it out to 7500rpm you still can. We'll add in a pretty heavy boost taper after 6500rpm to prevent those turbos from over working on redline shifts. Click here to enlarge
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        Hopefully we can get a few of these systems out in the wild in a couple weeks so readers can get a taste of what this platform can do. I expect a lot of simple 2 channel piggybacks will pour out for the platform so we've been taking extra time ensuring the JB4 implementation goes above and beyond what we foresee any competitors offering.

        Click here to enlargeClick here to enlarge
      1. BlackJetE90OC's Avatar
        BlackJetE90OC -
        Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
        I don't get the obsession with higher RPM personally.
        It is fun wringing out a high revving powerplant on the track. A visceral feeling that can't be described.
      1. ChuckD05's Avatar
        ChuckD05 -
        its also fun coming out of a corner in 2nd gear at 2500 rpms , hitting the gas and kicking the ass end out like nothing.
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
        its also fun coming out of a corner in 2nd gear at 2500 rpms , hitting the gas and kicking the ass end out like nothing.
        $#@! I'm coming out swinging, so fast it'll make your eyes spin.
      1. Terry@BMS's Avatar
        Terry@BMS -
        What's a corner? You mean when you make a right turn to exit the dragstrip after you've slowed down? Click here to enlarge
      1. sahyoun's Avatar
        sahyoun -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        The top performance option will always and forever be the E46 M3 over the F80 M3 and the E9X M3 over both.
        Wow that right there is probably one of the most closed minded things I've read. The S54 has higher power records than the S65 so I don't know why you would say that on top of the fact that the S55 just came out and people haven't even begun tearing them down so you don't have any clue what the power capabilities will be, so how could you say things like "always" and "forever"? You're putting down a motor which capacities are unknown but thats what I would expect from an s65 fanboy. Have fun supercharging an s65 adding even more weight to an already heavier motor and screwing up weight distribution. The s65 would need a supercharger for tuned s55 performance and will never have that torque or torque deliver all for what a higher rev range? Thats only one aspect of an M car which clearly you don't understand.
      1. sahyoun's Avatar
        sahyoun -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Don't start. Why bother?

        NA motors can't be turbo'd?

        What happens when you turbo the BETTER motor?

        It isn't about being NA purists. It isn't about anything like that.

        Race me Vargas. I'll show you what's up.
        Then its not a true M car according to your logic, therefore your S/C M3 is no longer a true M car since weight distribution is off from stock (50/50) and has FI