['23 M340i xDrive Non MH]

[Kerils]

Hi there,

Could you kindly help me in reviewing my logs? Thank you.


James

[Steve @ BMS/Fuel-It!]

Sure...could you give me more information.

Mods, fuel, etc. and do a proper log on map 1 at wide open throttle starting in 3rd gear at 2k rpms and go to redline on a safe private track?

[Kerils]

Hi Steve,

Thanks for this. will get back to you later on the logs.

91
Dinan Intake
MPE
stock DP

Am currently troubleshooting my JB4 as its causing me some issues. Here's the recap of it:

I'm having some issues with it even on map 0 whereby my exhaust flaps would sometimes open/close as per usual, and sometimes not (Even though I've left the JB4 on the default-OEM setting [Both signal lights when selected].

Yesterday on my drive home at night, on S+, I felt like the exhaust was louder and quieter at various times. In conjunction with that, it felt like the car's power degraded a little bit during the drive- I was on map 0 during this time.

When I stopped my car (while in S+ mode), I went from S+ > C > S+. The flaps remained close at all times. I then powered off my car, unplugged the JB4 OBD plug, and the flaps started operating as per usual once again.

[Steve @ BMS/Fuel-It!]

Looks like some of your settings are wrong. Reload your firmware and make sure all your JB4 settings are back to the default values...

https://www.jb4tech.com/forum/model-specific-engine-tuning-modification-discussion/b58-b48/4984-jb4-b48-b58-firmware-settings-and-notes

Then upload a proper log and I'll take a look at it..