jb4

  1. JB4 w/EWG Harness and Bluetooth Kit + Fuel-it! Complete Kit

    These both just came off my '21. Bought them both new for about $1200. No issues. $350 for the Fuel-it! - It's the newer version with the revised fuel lines. $450 for the JB4. via Paypal G&S. Willing to cut a deal if bundled, otherwise, buyer is responsible for shipping and PayPal fees.
  2. JB4 w/EWG harness and bluetooth kit

    Just came off my '21. Perfect working condition and unlinked from my Supra - ready for yours ;) Worked in conjuction with the Fuel-it flex fuel kit (also for sale), just going MHD+ and will no longer need it. Asking $450 via Paypal G&S. Buyer is responsible for shipping and PayPal fees.
  3. Flex Fuel Kit for the MKV B48/B58 - Complete kit

    Just came off my '21. No issues. Worked great with my JB4 (also for sale), just going MHD+ and will no longer need it. Asking $350 via Paypal G&S. Buyer is responsible for shipping and PayPal fees.
  4. Sold: FS: JB4 w Bluetooth B58 $400 OBO

    Hi team! Selling my jb4. Used it on my 21 Supra 3.0. Has the jb4 connect kit installed for Bluetooth. Recently did a Femto unlock, so the jb4 is no longer needed. Looking for a new home :) $400 obo
  5. Sold: FS: JB4 with Bluetooth SOLD

    SOLD Hello All! I’ve sadly sold the Supra and have just a few parts to still sell (the rest went locally). Feel free to ask any questions. Shipping as early as Tuesday (due to holiday weekend). - JB4 with the Bluetooth Module and wastegate wires. (Has been remotely Reset using JB4 website)...
  6. B58 JB4 With Bluetooth Connect Kit -$375 OBO Shipped

    Lightly used for only a couple of months, works great just going femto unlock/mhd route. Bluetooth Connect Kit. 375$ OBO.
  7. AFRs .....(jb4)

    Hello just curious what everyones AFRs are at . Currently im using jb4 with a custom map and they're right around 14.5 roughly. I've read that this is normal since the ecu targets that stock.
  8. Check out my logs?

    Hi! finally got the Jb4 in. 21 supra 2.0 running on e15 same tank for both logs. Only have AWE catback exhaust. Map 2: I believe my log looks okay, but I feel like my boost peaks way too high. And is my AFR sitting in the right space or do I need to target a richer mix? Something just feel...
  9. Check out my Logs?

    Hi! finally got the Jb4 in. 21 supra 2.0 running on e15 same tank for both logs. Only have AWE catback exhaust. Map 2: I believe my log looks okay, but I feel like my boost peaks way too high. And is my AFR sitting in the right space or do I need to target a richer mix? Something just feel...
  10. Sold: For Sale: B58/ B48 / Supra JB4 - $400 OBO

    Hey all, I'm selling my Burger Motorsports JB4 for the B58 / B48 / A90 Supra complete with EWG and Bluetooth wireless connector as I have recently unlocked my ECU via Femto and would like to pass this on to someone who can enjoy it. The JB4 has already been unlinked and is ready to be installed...
  11. FS Jb4 with Bluetooth and ewg

    Jb4 for sale for Supra $400 shipped. Local to AZ I’ll let it go for $350
  12. Is it worth getting a custom JB4 map if you’re not doing flex fuel

    I have a 22 3.0 premium I have a armtrix catless dp, hks exhaust and hks carbon intake I plan on doing 93 but is it worth getting a custom jb4 map for just that. Not really tracking it, just street and driving for fun. I’m being told by other owners that’s it’s not worth that much money (500$)...
  13. JB4 DRAGY TIMES

    For my JB4 guys, I went out and did some testing of all the maps including map 0 (JB4 disabled) on an E36 mix. Mods: Magnaflow XMod Exhaust Eventuri Intake INJEN Chargepipe Mishimoto Heat Exchanger 4.5in Catless Downpipe JB4 My personal best I’ve gotten on map 6 is a 9.36 with a passenger...
  14. Tried out map 4 with the jb4 on e30, here are the logs…

    So I posted a thread not too long ago of some logs I did while running map 5 and it wasn’t pretty, I was informed to try out map 4, here are those logs. I’m concerned with the afr’s @ColonelAdama @Jesse DaBears
  15. Can someone review these jb4 map 5 logs for me

    I’m running e30 with a catless downpipe and mst v2 cold air intake on map 5. I started out on map 2 with 93 pump gas and everything felt smooth. Everything still feels smooth it’s just I feel like in the logs the timing is doing some weird stuff it’s kinda all over the place. I put some WOT...
  16. Sold: JB4 with Bluetooth & EWG - $350 Shipped

    For sale is the JB4 off my 3.0. Used for about 5k miles. Comes with OBDII power cable, DMD bluetooth connection kit, and EWG functionality. $400 $350 OBO shipped to the lower 48. Let me know if you have any questions!
  17. SUPRA ULTIMATE JB4 GUIDE AND LOG REVIEW (V1)

    SUPRA ULTIMATE JB4 GUIDE AND LOG REVIEW (V1) Been a busy 5 months learning nearly everything there is to know about JB4 on the B58 platform. Funny how trying to get my catless MT running right turned into countless log reviews and custom tuning on the JB4tech.com forum. As Jesse said it best...
  18. JB4 Map 1 Log

    Hey guys! First post here. I've had my 2021 Supra for about 3 months now and I've just installed a JB4 with EWG. The only modification it has right now is an Armaspeed CAI. These are my Map 1 logs. I don't think I'll be going higher than Map 1 or 2 but I also don't really know what the other...
  19. SOLD: JB4 w/ DMD $400 OBO

    Sold my lemon supra, no longer need it. Will ship to the lower 48. Used for about 4 months. Comes with OBDII power cable and DMD/"Wireless Smartphone Connection kit".
  20. JB4 code 1E0101

    I have a '23 A91 MT and the JB4 is throwing this code. The description says it's high idle after cold start. I'm running map 2 at the moment and sometimes I experience what I can only describe as rpm hang? In-gear there's very little engine braking. I wonder if it's related.


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