Issues with JB4 when accelerating

[SlyFox]

Been having this issue since i tried out map 5. I use the mix recommended of e85 and e93 premium and have the upgraded and gapped spark plugs but pretty often when i accelerate quickly i get a very bad jerking and bucking fro mthe car that happens 3-10 times and then stops and accelerates normally. I have tried different fuel combos and octane boosters and have had no success. Anyone had this issue or know a fix?

 

[runner1]

Post a log for terry?
Anything happen on maps 0-3?

 

[Terry@BMS]

Would need a log for any tuning advice.

 

[turboAWD]

Been having this issue since i tried out map 5. I use the mix recommended of e85 and e93 premium and have the upgraded and gapped spark plugs but pretty often when i accelerate quickly i get a very bad jerking and bucking fro mthe car that happens 3-10 times and then stops and accelerates normally. I have tried different fuel combos and octane boosters and have had no success. Anyone had this issue or know a fix?

Does it do it on map3? AWD or RWD? If RWD, possible you're spinning? I had traction control (even when "fully disabled") kick in so often at an auto-x I had to go to "comfort" AWD (i.e. 50-50 split rather than 80-20) because I was spinning tires like crazy. And that was AFTER set the jb4 back to map0 because map3 was just SO MUCH OVERKILL for the stock tires when doing auto-x.