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1-20 of 41 Results
  1. Q50 Parts
    No longer needed and will be in original box. Unlinked and ready to install. Willing to ship or local pick up.
  2. Q50 Parts
    Sold my Q50 and no longer need the jb4. It has the Bluetooth connection. Comes with fuel wires that were never installed. Asking $450 plus shipping
  3. Q50 Parts
    Local pickup available in OKC, accepting Paypal. Selling because my Q50 was afflicted with the cancer as a 2018, so I went a different route JB4 with the laptop cable (not bluetooth), with unused fuel control wires - $450 (400 local) shipped to lower 48 -used around 1,000 miles Also selling...
  4. 3.0t
    Got a jb4 from concept Z , installing it and i run into the 3.7 update for the connect kit but it stays in DFU starting and never finishes loading tried it several times with multiple phone also had another connect kit sent from BMS.Any tips or ideas before asking for a replacement
  5. Engine and Technical Discussion
    Recently bought a JB4 coming in soon. Currently have ams intakes,ldp,heat ex mbrp catback ,hks bov. On 91 octane need help with what map to run have one gas station near me with 93 so can run that aswell.
  6. Q50 General Discussion Forum
    Hey guys, I have a 2017 Infiniti Q50S with an MBRP 3in catback exhaust. I just purchased the JB4 off a guy in here and I’m concerned that the mapping may have to be different due to the free-er flowing exhaust. Anyone have suggestions on a Level 6 map for my specific situation? Thank you!
  7. Q50 Parts
    If anyone is getting rid of a JB4, let me know. Would love if it came with FW and/or EWG wires, but don't mind either way, just looking for it to come with BT at least. I am in Ohio, if anyone could meet up, but willing to pay for shipping if need be.
    jb4
  8. Q50 Parts
    For Sale: - JB4+ Performance Tuner -JB4 Wireless Smartphone Kit (Bluetooth) - Fuel Wires The product was used for 2 months and is in “Perfect Condition” 10/10. The fuel wires were never used. Now going the Ecutek route. $450 hit my DM’s (shipping included) ($700 value brand new)
  9. Engine and Technical Discussion
    What’s up just curious if anyone out here has the jb4 issues I am having with my 2021 q50. I have bought a ecutek tune but haven’t been able to get it done due to the ecu being different from previously released models. As of now I have a jb4 with limited functionality such as no dtc code read...
  10. Q50 Parts
    LED Door Logo Light Projectors. Never installed, my buddy has them and they work great as seen in picture below. $35CAD OEM 2017+ Q50s 3.0T Heat exchanger. Selling for a peer since he upgraded. No damage, works fine. He wants $225CAD Located in Canada, can ship in Canada or to the USA at...
  11. Engine Performance Data Logs Discussion
    Curious what u guys are running for boost/fuel. This is my latest JbTune, runs very good. Its running around 17 psi boost pretty much on the “safe side”. Im currently waiting on full catless exhaust, and fuel pumps to make more power. Happy with the results, feel free to post maps and or...
  12. 3.0t
    New to JB4 and looking at logs, I have not found anywhere yet that explains these items that are being monitored, what are they measuring and what should I look out for? Also, what shows if the system is invoking knock retard. Thanks for the help. Fuelen WGDC IGN_1 (is this timing and...
  13. Q50 Parts
    Hello all, for sale I have a brand new JB4 tuner purchased directly from Burger Motorsports. The warranty is still in tact and the module has never been installed in the vehicle. Didn’t have time to install when first purchased and am now going a different direction with the build. The module...
  14. Q50 General Discussion Forum
    I recently purchased a used jb4 from a reputable infinity eBay account. I installed brand new fuel wires to the Jb4 unit, but not to the car. Installed a brand new Bluetooth device, and a brand new obii wire. After starting up the car for the first time there were no check engine lights. Yet...
  15. Q50 Parts
    Hey guys, I am looking for a used JB4 with bluetooth for a 3.0t Q50. If anyone is willing to sell, lmk.
  16. Q50 Parts
    JB4+BT+EWG+FW Sold $475 shipped w/ paypal.
  17. 3.0t
    I just got a JB4 kit, installed bms intakes at the same time when i installed my fuel wires i was reading about 10 afr which is really rich. I was wondering if this is normal? im on 91 octane in canada. without fuel wires it runs normal at 14.5 afr Thanks for the help :)
  18. Q50 Parts
    Looking for a JB4 with Bluetooth. PM if anyone has one available
    jb4
  19. Engine Performance Data Logs Discussion
    So, last week I took my car to the drag strip for the first time and I ran a ridiculous good number for my first time and being in 93 octane only. I've looked at the log but other than my timing (IGN_1) dropping from 7 to 4 I don't see any other concern. The timing did recover, but I read...
  20. Q50 Parts
    Decided to go with a full tune. Selling JB4 with untouched fuel wires and comes with the bluetooth kit. I've used it for less than 2 weeks. 550$ OBO
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