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JB4 V15 B58 Firmware Updated

Discussion in 'DME / ECU Software Tuning' started by Gearbangin, Apr 17, 2020.

  1. Gearbangin

    Gearbangin Well-Known Member

    First Name:
    Larry
    Car(s):
    2020 Supra 175/1500 2007 TRD Edition FJ Cruiser/Lifted/Murdered out 2016 NT 200T F Sport 2019 RCF Anniversary Edition Matte Nebula Gray
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    Jan 18, 2019
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    Gods Country
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    Playing with the new updated for JB4 got that Fuel it Kit and E85 going on after quarantine. It hits hard from a dig traction issues even on the R888Rs 295s. Spinning hard no brake boosting or launch control. 0-60 3.85 seconds. On Map 3.

    Anybody else playing with it? I cant wait to get the E in there and try Map 5.

    See attached Terry and the Fuel it Z4 are making almost 500 whp without a flash. Pretty impressive. Bottom two pics.

    93401792_10219902333460868_3615111085855604736_n.jpg

    94147760_10219902323220612_3390579919426682880_n.jpg

    85012618_10219574628809746_2029087114934616064_n.jpg

    84494041_10219574630769795_2908759712088457216_o.jpg
     
  2. absaifan

    absaifan Well-Known Member

    First Name:
    Ahmed
    Car(s):
    Mkv Supra, MKIV 2jz-gte, Q7, FJ Cruiser
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    I'm running the new firmware on 93 fuel and 19psi, very good pulls and consistent, better than the old firmwares, the only issue I face is the boost spiking after gear shifts, especially if I manually shift, I'll hit 28psi easy and alot of the times will limp later on.
     
  3. OP
    OP
    Gearbangin

    Gearbangin Well-Known Member

    First Name:
    Larry
    Car(s):
    2020 Supra 175/1500 2007 TRD Edition FJ Cruiser/Lifted/Murdered out 2016 NT 200T F Sport 2019 RCF Anniversary Edition Matte Nebula Gray
    Joined:
    Jan 18, 2019
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    Gods Country
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    Im pretty sure that spike is when the throttle is closed and is normal. Its not a true spike.
     
  4. absaifan

    absaifan Well-Known Member

    First Name:
    Ahmed
    Car(s):
    Mkv Supra, MKIV 2jz-gte, Q7, FJ Cruiser
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    Sep 23, 2019
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    Dubai
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    Affirmative, now the only issue is, that clubbed with the CatlessDp, and you directly go into a bad limp mode, no boost and when that happens your tuning halts, you have to reset the codes and drive for a long while until limp mode is gone.
    Whne the same spikes occur on the stock dp, I never get the limp mode.
     

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