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Thread: M50TUB28 S256 E85 Dyno

  1. #1
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    E30 m50tub28 s256 e85

    Well I *finally* got around to getting this thing on the dyno, and it almost hit the magic number I wanted. On 18psi it cranked out 480WHP (359RWKW) just short of the 500WHP I thought it would make at that boost. It seems that my 450x300x76 ebay intercooler is out of its depth. Not only is it probably choking, but intake temps were also hitting 60C (140F) and the ECU was pulling timing. In fairness, I knew long ago that the IC needed to be replaced by something better, and I should have done something about it. But hey, all in good time, right?

    359KW Dyno 001.jpg
    Last edited by Nutzy; 10-02-2019 at 12:15 AM.
    1989 E30 - M50B28 Turbo - ZF 8 Speed

  2. #2
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    Nice work, that must be fun in a little e30. That could hand out some butthurt


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  3. #3
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    Twin turbo LS E36 M3
    Nice, can you plot the graph over RPM?
    328i Sedan Twin s366's, 6.0LS, TH400, MS3 Ultimate
    9.20 at 150 on 22psi

  4. #4
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    Good results!! Glad you were able to get some numbers on it!
    -Nick
    91 E30 M42 on VEMS

    Turbo Camshaft Thread

  5. #5
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    M50TUB28 S256 E85 Dyno

    Looking great! I bet e85 is responsible for that 15whp over raji's build.

    Im curious how high you pushed the timing? What was your compression? What ecu?


    Sent from my iPhone using Tapatalk
    Last edited by vollosso; 11-09-2016 at 10:58 AM.
    1989 535i - sold
    1999 M3 Tiag/Dove - sold
    1998 M3 Turbo Arctic/black - current
    2004 Built motor TiAg/Black - Sold
    2008 E61 19T Turbo-Wagon - current
    2011 E82 135i - S85 Swap - current
    1998 M3 Cosmos S54 swapped Sedan - current

    1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  6. #6
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    Quote Originally Posted by vollosso View Post
    Looking great! I bet e85 is responsible for that 50whp over raji's build.

    Im curious how high you pushed the timing? What was your compression? What ecu?

    Sent from my iPhone using Tapatalk
    15whp difference.

    Mine made 465 at 17.8#

    I'm jelly of e85 though. I would love to run it on higher cr and more timing!

    Nice results too man. It's a good little turbo!
    Last edited by rajicase; 11-09-2016 at 10:56 AM.

  7. #7
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    Corrected how do your setups compare?



    Sent from my iPhone using Tapatalk
    1989 535i - sold
    1999 M3 Tiag/Dove - sold
    1998 M3 Turbo Arctic/black - current
    2004 Built motor TiAg/Black - Sold
    2008 E61 19T Turbo-Wagon - current
    2011 E82 135i - S85 Swap - current
    1998 M3 Cosmos S54 swapped Sedan - current

    1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  8. #8
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    Quote Originally Posted by vollosso View Post
    Corrected how do your setups compare?

    Sent from my iPhone using Tapatalk
    9.0:1 s52 on 93 pump here.

    I think he is running an m50. Any tq numbers? That'd be interesting.

    I think my set up would make 500 with more timing but that'd be it's absolute max I guess.

  9. #9
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    Quote Originally Posted by rajicase View Post
    9.0:1 s52 on 93 pump here.

    I think he is running an m50. Any tq numbers? That'd be interesting.

    I think my set up would make 500 with more timing but that'd be it's absolute max I guess.
    Convert obd2 and lets see... ill be in bhm soon.....


    Sent from my iPhone using Tapatalk
    1989 535i - sold
    1999 M3 Tiag/Dove - sold
    1998 M3 Turbo Arctic/black - current
    2004 Built motor TiAg/Black - Sold
    2008 E61 19T Turbo-Wagon - current
    2011 E82 135i - S85 Swap - current
    1998 M3 Cosmos S54 swapped Sedan - current

    1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  10. #10
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    96 332IS 6466 turbo
    This setup have a meth kit ? If not, drop the coin for even a snow kit for $350 and get those temps down. 500 will be touchable IMO.
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
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  11. #11
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    Heya!

    The motor is an 8.5:1 vanos enabled M50B28 with stock 228's. I kept the stock rod length of 140mm when I bought the Pauter's and had the JE's designed around that and the 84mm stroke. I SHOULD have retained more compression though...20 20 hindsight. The turbs is the 65mm turbine version of Raji's unit and has a 0.84 single scroll housing which looks kinda small....I must do some BP measurements one day. ECU is Autronic SM4 firing 120lb Delphi injectors.

    I asked about graphing with RPM but he said it doesn't work....That sucks because that metric is much more useful.

    I haven't looked at the ignition map yet because I got home kinda late after the dyno and just parked it and went inside. The ignition map is one thing, but the ECU was pulling timing out of it because of the intake temps, so it may not be entirely useful.

    No, I don't have a meth kit but I was talking with my buddy last night about maybe spraying pre-turbo to bring the temps down. This extends the capability of both the turbo and the intercooler (as I'm sure we all know by now). Or I can just get serious with a nice 450x450x76 by Plazmaman (nearly $1000AUD!). I have a 200psi pump that has barely done any work, plus a host of H20 injection bits and pieces as well, so I could well just do something with that.

    It should make the 500whp I thought it would, and I'd guess that on the road with serious airflow moving through the core, it probably will. On the dyno it suffers quite a bit with the poor airflow and this showed up in the water temps going over 100C and oil temps hitting 110C. I could see the VE starting to suffer in the top end of 18psi, the fuel table showed it.

    It was raining like a beyotch last night so the drive home was boring in the sense that I couldn't taste the power, but a tad scary with my worn RS-R's doing a few aquaplanes here and there! I guess I'll get to feel it out this weekend.
    Last edited by Nutzy; 11-09-2016 at 06:01 PM.
    1989 E30 - M50B28 Turbo - ZF 8 Speed

  12. #12
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    Considering that e85 needs the heat i dont know why you'd pull much timing due to heat. I dont know how much you'd gain from w/m injection. Id go for a better intercooler or a bigger compressor wheel on that turbo


    Sent from my iPhone using Tapatalk
    1989 535i - sold
    1999 M3 Tiag/Dove - sold
    1998 M3 Turbo Arctic/black - current
    2004 Built motor TiAg/Black - Sold
    2008 E61 19T Turbo-Wagon - current
    2011 E82 135i - S85 Swap - current
    1998 M3 Cosmos S54 swapped Sedan - current

    1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  13. #13
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    1989 E30 - M50B28 Turbo - ZF 8 Speed

  14. #14
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    M50TUB28 S256 E85 Dyno

    No not that. It says tube and fin... you want bar and plate. Look for louvered And staggered cores.

    Garrett, pte, spearco, or even treadstone.


    Sent from my iPhone using Tapatalk
    1989 535i - sold
    1999 M3 Tiag/Dove - sold
    1998 M3 Turbo Arctic/black - current
    2004 Built motor TiAg/Black - Sold
    2008 E61 19T Turbo-Wagon - current
    2011 E82 135i - S85 Swap - current
    1998 M3 Cosmos S54 swapped Sedan - current

    1998 Turbo: PTE6870 | 1.15 ar | Hp Cover, Custom Divided T4 bottom-mount, 3.5" SS exhaust, Dual Turbosmart Compgates, Turbosmart Raceport BOV, 3.5" Treadstone Intercooler, 3.5" Vibrant resonator and muffler, Arp 2k Headstuds | Arp 2k Main studs | 87mm Je pistons | Eagle rods | 9.2:1 static compression, Ces 87mm cutring, Custom solid rear subframe bushings, Akg 85d diff bushings, 4 clutch 3.15 diff, , Poly engine mounts, UUC trans mounts W/ enforcers, 22RPD OBD2 Stock ECU id1700 E85 tune, 22RPD Big power Transmission swap w/ GS6-53

  15. #15
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    Remember this is on Dyno dynamics. If we had dynojets over here im sure it would have been over 500

  16. #16
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    Quote Originally Posted by vollosso View Post
    No not that. It says tube and fin... you want bar and plate. Look for louvered And staggered cores.

    Garrett, pte, spearco, or even treadstone.
    Interesting. So why would one choose bar and plate over tube and fin? I read that tube and fin flow better than bar and plate and cause less restriction to air flow into the radiator. Efficiency for a circuit car = T&F, thermal mass for drag racing = B&P.
    1989 E30 - M50B28 Turbo - ZF 8 Speed

  17. #17
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    Twin turbo LS E36 M3
    I was spraying pre turbo meth on my LS car and saw now difference. I was running a single 1000cc nozzle in the charge pipe right before the throttle body and 2x 500cc nozzles pre turbo's (so one 500cc nozzle on each turbo) and it brought it down some but not enough.

    What intake temps were you seeing and where is your sensor?


    As far as the autronic ecu, i did a turbo 944 on one. Its pretty cool. One thing i really like is the flow charts for fuel and timing. Its a flow chart that tells you what could be modifying the fueling and timing and by how much. Pretty slick stuff.
    328i Sedan Twin s366's, 6.0LS, TH400, MS3 Ultimate
    9.20 at 150 on 22psi

  18. #18
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    1992 3000GT VR4
    No reason to be scared of 140* intake temps with e85.
    1992 3000GT VR4. 4g63 Swap. DSM 2g Auto Trans. 10:1, E85, AEM, FP Super 99 turbo. Best ET 9.98...Best MPH 137.8

  19. #19
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    Mine gets up to 140f in the 1/4 but that's with 28 lbs of boost. Looking at getting a big mambajama core now with dual fans on the front. Guys with blow through carbs on e85 and no intercooler get up to 260 degrees!


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  20. #20
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    140 IAT! You guys run cool!

    Mike
    IG: @mikevanshellenbeck

  21. #21
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    Quote Originally Posted by MikeE36 View Post
    140 IAT! You guys run cool!

    Mike
    Mabey if you'd stop driving sideways like some hooligan you'd get some air through there!


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  22. #22
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    Quote Originally Posted by vollosso View Post
    Im curious how high you pushed the timing?
    Timing as requested!

    IGN.JPG
    1989 E30 - M50B28 Turbo - ZF 8 Speed

  23. #23
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    Twin turbo LS E36 M3
    I know its e85, but thats 6 or so degrees more then ive ever been able to put into one of these engines (referring to the 200kpa column)
    328i Sedan Twin s366's, 6.0LS, TH400, MS3 Ultimate
    9.20 at 150 on 22psi

  24. #24
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    Quote Originally Posted by dburt86 View Post
    I know its e85, but thats 6 or so degrees more then ive ever been able to put into one of these engines (referring to the 200kpa column)
    What was the result of putting in more timing? Did it detonate or just drop power? Those timing figures are only about 1 to 2 degrees more than what was dialled into it on 98RON fuel.

    - - - Updated - - -

    I'll park these two links here. Food for thought.

    http://www.bimmerforums.com/forum/sh...6#post29466476

    http://www.bimmerforums.com/forum/sh...9#post22002109
    1989 E30 - M50B28 Turbo - ZF 8 Speed

  25. #25
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    they just wouldnt gain anymore. Keep in mind, im talking in pump gas terms and not max effort either. Ill air on the side of caution for most cars, unless its mine, then i usually dump in a bunch of timing and blow it up.
    328i Sedan Twin s366's, 6.0LS, TH400, MS3 Ultimate
    9.20 at 150 on 22psi

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