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  1. What did you do to your Supra today?

    sorry to hear man! Mine is not being considered totaled. So far the repair bill is up to $21k. Going to be a long time before I get it back though.

  2. What did you do to your Supra today?

    @Evolution @_Sp1ral0ut @FLtrackdays @bushido @zrk @Jesse DaBears Update: The car, which I had named Sasha, is totaled. Preliminary repair estimate, in total parts & labor was $41,254.48. Was able to swap out my Armytrix downpipe, RK Ti exhaust, @NitroYellowMKV steering wheel, JB4...

  3. Sold: 2020 Supra (lots of mods) For Sale (Tunable ECU) price lowered

    It’s been about a year now since I had the Supra and as much as I love it lately it just sits for weeks on end without moving so I decided it is time to part with it ahd hopefully it goes to a fantastic new home. I’ve done, what I feel, is a lot of very tasteful mods for both appearance and...

  4. What did you do to your Supra today?

    Any reason why the pull was done in 5th gear? I thought the 1 to 1 ratio for the ZF is 6th.

  5. What did you do to your Supra today?

    Nice. Very similar to mine. He is running less boost but more timing, which makes sense on the lower compression 21+. Plus, I also asked for less timing because track use. I peak at 14*. Usually 1* of timing is about 10whp. I dunno about a dynojet reading "low", It's a dynojet on STD...

  6. What did you do to your Supra today?

    Still waiting on one chart but wanted to get this out. To recap and keep everything in one place, I’m adding content from a few other posts of mine. I think it’s important to get the full picture. Until a monthish ago, I was running this setup. I ran this setup from 3k-7k miles. JB4 Map 6...

  7. Will a 305 tire on 10.5 rim with lowering springs rsr rub ?

    mst intake catless downpipe tomei exhaust cts charge pipe and running jb4 on e30

  8. Seeking more info on JB4 Map 6 tuning

    https://www.supramkv.com/threads/exhaust-flap-closes-jb4.6933/#post-205183 So when you go to "OEM mode" with both flashers, you need to shut down the engine for the settings to save properly. It's probably overkill, but I got out of the car and locked the door to ensure the setting would...

  9. Collection of JB4 Experiences

    ) how long/how many miles have you had the JB4 on for? 12k 2) what map are you running? map6 3) what kind of driving do you do with the car, set to your desired map, and how has your experience been? The good, the bad? I drive it like I stole it. The bad....umm...rear tires are getting...

  10. What did you do to your Supra today?

    You ok bro? You sound real insecure. You really worried about what another man does!? You sound kinda moist. And for the record, group of teenagers asked to see under my hood to confirm it was indeed a bmw.

  11. What did you do to your Supra today?

    Ohhhh shit so you have a downpipe and exhaust AND JB4........+......MY BAD, And what I meant was usually people pop their hoods with some cosmetics under the hood or something, not just all stock so relax JB4+ guy!!!

  12. New pistons and rings sub 20k

    So this is going to be the final form for now. This is after two months of ownership, could’ve been done faster if bodyshops didn’t have so long of a lead time. Mods: HKS catback exhaust HKS intake AA catted DP Eibach Springs Burger 15mm spacers x4 295 Mich rear, 265 Mich front CF A91...

  13. Best tuning options for 2023 MT

    I don't recommend JB4 for MT cars. It takes a ridiculous amount of effort to get dialed in. I'm still working with BMS directly to test development JB4 systems on my car. Just femto unlock + whatever tune platform your local tuner prefers if your budget allows it.

  14. Collection of JB4 Experiences

    1) how long/how many miles have you had the JB4 on for? 5k or so 2) what map are you running? two different map6 3) what kind of driving do you do with the car, set to your desired map, and how has your experience been? The good, the bad? I beat the shit out of my car no matter if I'm going to...

  15. Collection of JB4 Experiences

    I have no experience with Jb4, what is the difference between custom jb4 map and noncustom?

  16. Weaker Down Shifting

    I daily drive a 2023 B58 6-cylinder automatic Supra , bought brand new, has 4500 miles and put through the proper break-in period. Mods : MST INTAKE , and JB4 (map 1 and occasionally map 2 on weekends with 93 octane on both maps) Concern: (when in SPORT MODE) - I feel as though the down...

  17. Seeking more info on JB4 Map 6 tuning

    That's how I have mine on. Left blinker canflap(BC) setting - opens the flap like 5 seconds after cold start. Super loud. Sucks that the two blinker OEM operation mode doesn't work at all.

  18. Seeking more info on JB4 Map 6 tuning

    Does the flap work normal if you unplug the jb4 from the diagnostic port?

  19. Seeking more info on JB4 Map 6 tuning

    I was able to get the exhaust flap to remain open at all times. Startup, normal, and sport mode all have the flap open now. It sounds nuts even with a stock DP. It took me a few tries to get it working this way. I used the BC button on the stalk and not the canflap on the JB4.

  20. Seeking more info on JB4 Map 6 tuning

    I’m having the same issue with my JB4 Regardless of how I set the BC button with the car on, off or in diagnostic mode. ive completely lost the ability to control the exhaust flap with the sport button.On the fly control is pretty mandatory for me.





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