[matt392]

Hi so I have a 2008 335xi with 91,000 miles on it. About 5k miles ago installed a jb4, fmic, bms dual cones, mhd flashed (before jb4 was installed), fresh plugs, charge pipe upper and lower, bov (which at 4k+ rpms making a leaking noise of some sort? IDK? Everything happened at once). Car starts hard. After it warms seems ok, I'll get on it from a rolling 5mph to maybe 60% pedal and it hesitates, then goes, let off gas, makes almost sounds like a backfire, not quite, jb4 code says cylinder 5 is misfire and 2ded power management control. yes I have searched these forums, I've heard everything from fuel pumps to o2 sensors to a bad battery. Now first thing IMO correct me if I'm wrong is try switching coil 5 and 6 or whichever see if cylinder 5 is still a misfire. That would be nice, if was a coil. IF NOT I suspect not, if problem still occurs, check battery? Whats weird is I have my bt cable always hooked to my tablet, went thru firewall in glove box, now when accelerate somewhat hard it disconnects, every time, this is new. This leads me to believe perhaps something is grounding maybe? IDK? Back to the o2 sensor, maybe related? This is the only other thing I can think of I put 110 leaded gas in my car. I saw a 'race' pump after the jb4, didn't really think much about it, filled the $10 a gallon jet fuel later reading it was in fact leaded race fuel and it would smoke my o2 sensors. Well it had been several months and nothing had occurred until this past week not that it killed the sensors. But right now No power, well power is all over the place. poor shifting (auto) (cylinder 5 misfire, 2ded power management). Damn AC isn't working anymore. Needs new shocks, bouncing around all over the place, about time for some diff fluid changes, intakes never been cleaned a walnut blast would probably revive her. You know just a couple 3-6 grand if I'm forced to swallow my pride and take to the dealer. Bah! BMW problems.

[matt392]

My lvfp is at 65 btw.. So its something else...

[AWDBooSTIn90]

I also had the code show up on my MHD, read codes:
2DED - Power Management, Standby Current Control.

Was wondering if you found out any other info. Im flashed with MHD stage1+ and DP's.

The thing is, my car is fine.

Battery is less than 6 months old. Starts up fine. Voltage is always perfect, even after the car sitting for a few weeks. (Don't drive it winter much).

[cheft335]

Hello, did you ever resolve this issue? Having basically the same problems. 2DED, misfire, rough shifting/sometimes doesn’t shift (auto), super abnormal rc car sound that follows rpm. Very lost on fixing this. Thanks In advance