[13entley]

Hey,

I have a 6spd 08 335i, and noticed this happen twice while I had my Jb4 pnp in. Was wondering if I could get any insight.

Twice now, when under hard acceleration in second or third gear, right after my shift my service engine soon light on the dash would go off, and also, a about 70% loss of power to the rear wheels can be felt. It almost felt like after the light when off, when I accelerated the back seemed to be seriously sluggish, and almost felt as if there was a missed connection between my engine and drivetrain. The light and power loss would be the same until I simply turned off and restarted the car, everything would reset and be back to normal. The car didn't actually go in "Limp" mode, because it happened to me before and it would come up on the iDrive system, the only thing that happened was the service engine light soon light on the dash would go off, and I would have serious loss in power.

Any insight on what may be happening? If any additional information may be needed let me know and ill answer.

Thanks

[Mike@N54Tuning.com]

Read the code with the JB4 and search it on the forums or email it to BMS for advice. Directions for reading codes is on BMS' forum.

Mike

[IancoleTX]

Also read the forum titles.

[E90Mack]

Originally Posted by IancoleTX

Also read the forum titles.

+1

[RajSingh_F10]

I have this same issue exactly how it has been described with the same exact car.
I thought maybe its a JB4 Software issue so I updated the JB4 Software to the newest version and im having the same issue. Please help me out what you found and how i can fix this problem