Stutter engine and battery issues on N55 JB4??

stanz1983 · 06-22-2014, 08:26 PM

Hi guys... ive been using jb4 for the last month. And for the last few days i got this stutter engine kind of thing, it feels like the car is losing power in milisecond to a second, it always happen whenever im on 2500-4500rpm. Its not always happening, but quite often too

And the other thing that might have been affected by jb4 is the battery. Its only been a month since i got it installed, and i only drive it twice a week. And just today i got battery replacement message. I dont know for sure if its because jb4, but i think somehow yeah theyre all connected between those stutter engine and battery issue.

Has anyone ever encounter this issues?

Any info will definitely help me. I just called bmw and they said the cost for battery replacement is 500-600.

BigDeep1 · 07-13-2014, 11:57 PM

Sorry to hear you are having issues. I have read of similar problems several times. Did you buy the tune new? I would contact Terry at BMS.

This may be a better place to post your concerns:

http://www.n54tech.com/forums/forumdisplay.php?f=17

BigDeep1 · 07-22-2014, 02:42 PM

Any updates?

06-22-2014, 08:26 PM	#1
stanz1983 Enlisted Member 5 Rep 30 Posts Drives: 2011 535i xdrive Join Date: Mar 2014 Location: littleton, US iTrader: (0)	Stutter engine and battery issues on N55 JB4?? Hi guys... ive been using jb4 for the last month. And for the last few days i got this stutter engine kind of thing, it feels like the car is losing power in milisecond to a second, it always happen whenever im on 2500-4500rpm. Its not always happening, but quite often too And the other thing that might have been affected by jb4 is the battery. Its only been a month since i got it installed, and i only drive it twice a week. And just today i got battery replacement message. I dont know for sure if its because jb4, but i think somehow yeah theyre all connected between those stutter engine and battery issue. Has anyone ever encounter this issues? Any info will definitely help me. I just called bmw and they said the cost for battery replacement is 500-600.
	Appreciate 0 Tweet Quote

07-13-2014, 11:57 PM	#2
BigDeep1 First Lieutenant 33 Rep 375 Posts Drives: 2011 535i Sport - P1, P2 Join Date: Sep 2012 Location: Irving, TX - Valley Ranch iTrader: (0)	Sorry to hear you are having issues. I have read of similar problems several times. Did you buy the tune new? I would contact Terry at BMS. This may be a better place to post your concerns: http://www.n54tech.com/forums/forumdisplay.php?f=17
	Appreciate 0 Quote

07-22-2014, 02:42 PM	#3
BigDeep1 First Lieutenant 33 Rep 375 Posts Drives: 2011 535i Sport - P1, P2 Join Date: Sep 2012 Location: Irving, TX - Valley Ranch iTrader: (0)	Any updates?
	Appreciate 0 Quote