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  1. Sold: F/S JB4 with BT

    Used JB4 in good shape. Has EWG and BT. No longer need because I’m switching to BM3. 425 shipped to CONUS

  2. JB4 vs Unlocked Tune

    Thanx for that. Can you keep me posted on that the process I may want to follow in your steps. I was watching on yt think it was thicc whips he had a smoothee curve on a mhd tune over bm3 same shop and all

  3. JB4 vs Unlocked Tune

    $700 for 510whp/550tq and whooping hellcats. Very well worth it. Jb4 can't do that unless with meth but then again, with meth you'll spend more money than a custom tune on bm3/mhd.

  4. JB4 vs Unlocked Tune

    I will be selling my jb4 for $550 shipped this week. I sent out my ecu for bm3 unlock. If anyone is interested in a jb4

  5. JB4 vs Unlocked Tune

    Jb4 is limited power and very limited features. I sent mine off to gtp last Friday to unlock. I will be going with bm3. Bm3 currently has more features than mhd. When unlocked, supra can make more hp with 93/e40 custom tune.

  6. JB4 Custom Map 93 Octane

    Because bm3 has flexfuel, map switching on the fly, anti-lag. Mhd does not have that. Jb4 doesn't come near the features bm3 offers. And can push more hp on bm3 and mhd compared to jb4.

  7. JB4 Custom Map 93 Octane

    Why did you choose mhd and not bm3? I sent mine to get unlocked and I'm choosing bm3 because it has more features compared to mhd

  8. JB4 Custom Map 93 Octane

    It does. Thanks. I am an overthinker sometimes. My greatest obstacle is myself at times.

  9. JB4 Custom Map 93 Octane

    I cannot speak for BM3 as I have never used it. I am not necessarily suggesting anyone switch anything. Just pointing out my opinion based on experience from both jb4 and mhd platform. Going jb4/meth/ E35 tune did cost me more then getting the Femto unlock and using MHD with ots maps. For me...

  10. JB4 Custom Map 93 Octane

    Fuel control, timing control, AFR targeting, better boost management, burble control, etc., etc.. JB4 doesn't allow for any of that.

  11. JB4 Custom Map 93 Octane

    Without going clone doesn't that leave MHD and BM3 on the same playing field as JB4? By that I mean no flex fuel, no antilag, big turbo, etc? Other than being a tad faster (taking your word for it as I don't have the experience to compare) what else can MHD do that JB4 path cannot? I'm thinking...

  12. 2022 Supra tune // what are my options?

    partial unlock allows for full calibration rewrites. This means you can make big power and use the ecu itself to change timing boost and fueling. the jb4 is a different animal. It tricks the ecu into thinking it’s making less boost and the ecu compensated by making more boost. It’s very...

  13. 2022 Supra tune // what are my options?

    Good explanation totally understood the cloning and unlock parts. But is a partial unlock better than a jb4 or no? Also is femto the only provider of this service the partial unlock? I have seen a lot of people mention BM3/MHD but I still dont know how they work? Are they similar or one is...

  14. 2022 Supra tune // what are my options?

    Okay I'm by no means the guy to fully answer this but I can at least get you started until someone smarter than me gets in here. Any Supras made after 06/2020 have a locked out ECU. Therefore the only way to tune it is to have a shop do a partial unlock, which will allow you to run tuning...

  15. Once ECU is unlocked

    Is it possible to control boost by gear through using the jb4 as a back end flash? Or are there any other benefits the the jb4 can be used as on the back end of either mhd or bm3? Besides the obvious one which is using to control methanol.

  16. Once ECU is unlocked

    I have a few questions as i’m unlocking my ECU next month and want to know where to go from there. Im going to be tuning with BM3 (I’m currently catless DP on JB4) and plans are next year go pure 850. I was thinking if i should upgrade the fuel pump to be able to run full E85 or do I need...

  17. Post 6/2020 ECU unlocked in US

    New to platform.. what benefits would I see with a BM3 partial unlock over jb4? On custom tune 93 and ethanol blend map

  18. Confusion is why i ask

    About how long did it take you, been seeing few supras on YT with BM3 as well and MHD anyone running these?

  19. JB4 Custom Map 6 Process

    Theres a lot of info on FB as far as dynos and draggy go. 1/4 mile track times are going to vary quite a bit. I have one guy running 11.25 with Canda gas and a little octane booster, and I have other guys running 11.5 with an Eblend and Meth. It really comes down to the driver. As far as why...

  20. JB4 Custom Map 6 Process

    My JB4 drag and 60-130 results: https://www.supramkv.com/threads/2021-baseline-runs-deep-11s-with-the-basics.12849/





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