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

    I'll do my best You should be running P158 firmware for gen2 b58. I run V34 to help with the EWG fault codes For manuals we want to "under boost" so I run my PID at 0 FF is per map With 94 I'd try this on Map 2. Look at timing to double check if its good gas. (v34 timing will reflect...
  2. HKS clunky springs issue

    I have the same problem. I even went as far as having the strut bearings replaced along with versus camber plates and they still make a squeaky noise when near full lock. I noticed they only make noise when it cooler out. It doesn’t make the noise when it’s hot out or when the engine bay is...
  3. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    From what I've been told Shell is the most consistent, Id give that a try on map 1 again.
  4. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    I would try to get some better fuel or some additive. I had the same timing if not worse on "94 octane". I switched to shell and got some octane booster and it cleaned my timing right up. https://datazap.me/u/jtignor/93-booster-map1?log=0&data=1-11-26-27-28-29
  5. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    Having a go at it myself I have continued to lower FF and Duty in pursuit of no closures, ECU PSI below 16psi, and Calc Torque below 48 I want to keep chasing ecu psi but is it ok to have such low FF and Duty 3k and lower? Is it normal for the boost to peak then dip so much? It seems like I've...
  6. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    I did a few night pulls with the new duty bias. At this point would you drop bias before or at torque over 47? What size increments are good for fine tuning? https://datazap.me/u/jtignor/col-first-revision-night-pulls?log=0&data=1-2-9-13
  7. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    Thank you, I appreciate the help! I'll give it a go. You da real MVP 👊
  8. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    I'm back again, this time with a fresh tank and a catless downpipe. I appreciate any help, I don't think my half a brain is up to par. MT 94 Octane (hopefully) No Name 4.5" catless downpipe AWE Cat-back BMS BOV and charge pipe FF=10 Suggested duty bias from page 1 MAP 1...
  9. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    My dumbass saw that BMS MT Supra video and set my FOL to 0, lord help me. Here is 2 more runs at FF=25 and FOL=50. I think the timing, AFR, and Trims look better. https://datazap.me/u/jtignor/map1-ff25-1?log=0&data=1-8-9-11-25-26-27-28-29
  10. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    There was some typos in my initial post I went back and corrected. FF was actually 30 and I missed my BMS BOV. Here is Map1 FF=25 https://datazap.me/u/jtignor/map1-ff25-0?log=0&data=1-11-14-18-25-26-27-28-29&zoom=9-261
  11. SUPRA ULTIMATE B58 JB4 GUIDE AND LOG REVIEW (V1)

    Hey guys, I'd appreciate it if someone can take a look at these runs. I'm still new to tuning and a little nervous. My end goal would be map 2 or a custom map 6. Future mods will be Catless DP MAP1 PID=0 FF=30 MT 94 Octane AWE Cat-back BMS BOV and charge pipe Using new free jb4 pro app...





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