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  1. Race Tracking Your Supra - Information exchange

    transf was actual transmission temp when I ran a JB4 a few years ago. Maybe it's changed in a later firmware?

  2. Race Tracking Your Supra - Information exchange

    It almost looks like it could be radiator fan duty/speed or something. Trans temp is a gradual increase through the session. Here are two BM3 logs. This also mirrors what I see when I log the straight CAN trans temp ID#

  3. Race Tracking Your Supra - Information exchange

    using whatever the autologger for jb4 is. can you share what the dataset looks like on bm3? i wonder what "transf" actually is, then.

  4. GR Supra 101: Routes to big power

    My car is running 495whp on pump fuel with a hybrid turbo, so with the right supporting mods it is certainly doable. (Femto unlock, BM3 custom tune)

  5. GR Supra 101: Routes to big power

    A dumb question: If I dont want to mess with E-blend, can I just get a bigger turbo(pure 800) + BM3(or maybe JB4 with help from Jesse?) to reach 500hp flat? If it is doable, do I still need other mods to keep up with the bigger turbo? Like charge pipe. And do you think it is worth to go with...

  6. Boost leak?/bad turbo?

    We’d need to get @bootmod support in on why ots is pulling high boost on oem. I didnt blow my turbos but after looking at the logs, I limited my boost to 23.8 I think, which is the max custom boost limiter. Def a little slower but not worth the risk

  7. A90 Supra 1/4 Mile Times

    The issue is understanding it all. Just because your adding boost and timing looks fine that doesnt mean its going to go any faster your just beating the car up and wearing parts faster. You have the car running 25 PSI and its basically running 12s at the track. This is where I probably should...

  8. A90 Supra 1/4 Mile Times

    What else makes power besides boost and timing then? Provided timing (IAT and ecu_psi "cylinder fill") stays constant as the boost increases, i see no reason for a power drop. Obviously at a certain boost level, IATs climb more quickly and drop base timing. I am pretty well read on how B58...

  9. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    Yea I’m actually looking to go either mhd+ or bm3 maybe in the next 2 months. So I want something that can also be used with either of those platforms. Thank you for the heads up! just waiting to see how that pure900 coming out performs!

  10. JB4 Owners (2020 ONLY)

    I'm not running JB4, but if you're looking to cut costs, you really don't need an EcuTek tune. BM3 comes with an OTS map at $595, and MHD with OTS maps is $433. The stock intake flows just fine, and would cost just as much as a bench unlock, if you happen to need one.

  11. What did you do to your Supra today?

    Glad we found the issue! Looking forward to see the dyno gains!

  12. What did you do to your Supra today?

    Fixed the boost leak I never knew I had. Explains the lower dyno #’s when I was on JB4/WMI and now BM3 OTS E50. Thanks to @zrk and @ColonelAdama for taking a look at my logs. My dumba** never transferred the seal from the oem chargepipe that attaches to the turbo. ??‍♂️ New log Old log

  13. BM3 vs JB4

    ???? stay stock save your money. Intake does nothing on the car.

  14. BM3 vs JB4

    That was well written my friend. I appreciate the detailed information without belittling me. Thank you.

  15. BM3 vs JB4

    Honestly with ACN91 fuel, you'll not be making much more power over stock either way. So if you are locked ECU, I'd just do the JB4 for a small power bump, since it'll be much cheaper. ~350-450 secondhand typically. If you have ethanol available, that will help make way more power. On a...

  16. BM3 vs JB4

    Bern77, i'm going to try to prevent you from getting absolutely flamed on here by the savages that haven't eaten in days. JB4 works on any car, it's simple and just tricks the DME into allowing more boost (amount depends on the map). There is a guy Jesse on the forums here that will do a...

  17. BM3 vs JB4

    https://www.supramkv.com/search/1623506/?q=BM3+Jb4&o=date

  18. BM3 vs JB4

    So i plan on getting either the JB4 or BM3 with just an intake. Stage 1/Map 1 is as far i’m planning to go as far as tuning. Has anyone experienced both platforms in stage 1? If so which produces more horsepower/torque. Also will I need an upgraded charge pipe if this is all I plan on modifying?

  19. Best bang for the buck performance mod

    If i had to do it over again, i'd skip the whole JB4 nonsense and would have gone straight to a catless downpipe, Femto unlock, and OTS tune from either BM3 or MHD. All boils down to what your goals are. IMO, the JB4 was only a mild upgrade from stock tune/power, when i went custom tune on BM3...

  20. Best bang for the buck performance mod

    Depends on what oil you use.





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