Engine Power Problems JB4

arunser · 03-18-2016, 03:05 PM

My 2011 335i with the n55 engine has been experiencing some problems lately. The mods I have on the car are as follows: Jb4 running map 5, BMS charge pipe, BMS oil catch can. There are two issues I’m currently having with the car.
1) when I start to accelerate(doesn’t matter if it’s a hard or soft acceleration) the car loses some power and sometimes goes into limp mode. This happens about 30% of the time.
2) I have emptied my oil catch can twice in the past 4 months and both times it has been filled almost all the way to the top with pure yellow oil. These problems seemed to have started a month or two after installing the JB4. I updated the JB4 firmware about 3 months ago and the car only has 54,000 miles. Please let me know what you guys think.

Alex

orteeze · 03-18-2016, 03:39 PM

Yellow oil? I'd have it checked for a leaky head gasket.

Johnny Boost · 03-18-2016, 03:49 PM

I'm no mechanic but these don't sound like problems the jb4 would cause.

mike@x-ph.com · 03-19-2016, 12:40 PM

Does not sound like a problem caused be the JB4

What are the codes you are getting?

arunser · 03-20-2016, 04:17 PM

I haven't had time to read the codes yet, this is due to the fact that when I restart the car the codes all disappear. When I get a chance I'll read them, it's the weirdest and most inconvenient thing. I almost got rear ended going though a tunnel today.

03-18-2016, 03:05 PM	#1
arunser Registered 0 Rep 2 Posts Drives: 2011 BMW 335i xDrive Sedan Join Date: Oct 2014 Location: Portland, ME iTrader: (0)	Engine Power Problems JB4 My 2011 335i with the n55 engine has been experiencing some problems lately. The mods I have on the car are as follows: Jb4 running map 5, BMS charge pipe, BMS oil catch can. There are two issues I’m currently having with the car. 1) when I start to accelerate(doesn’t matter if it’s a hard or soft acceleration) the car loses some power and sometimes goes into limp mode. This happens about 30% of the time. 2) I have emptied my oil catch can twice in the past 4 months and both times it has been filled almost all the way to the top with pure yellow oil. These problems seemed to have started a month or two after installing the JB4. I updated the JB4 firmware about 3 months ago and the car only has 54,000 miles. Please let me know what you guys think. Alex
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03-18-2016, 03:39 PM	#2
orteeze Major 223 Rep 1,073 Posts Drives: 2018 YMB F80 Join Date: Sep 2014 Location: Alabama iTrader: (14)	Yellow oil? I'd have it checked for a leaky head gasket.
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03-18-2016, 03:49 PM	#3
Johnny Boost Colonel 324 Rep 2,014 Posts Drives: '21 M850i GC Join Date: May 2013 Location: TBD iTrader: (0)	I'm no mechanic but these don't sound like problems the jb4 would cause. __________________ WedgePerformance E40 MHD \| Performance Exhaust Mod \| BMS DP \| Vibrant 1790 \| BMS Intake \| VRSF CP \| xHP Stage 3 Michelin PSS \| M3 Control Arms LUX v4 LEDs \| Shadowline Grills \| Lip Spoiler
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03-19-2016, 12:40 PM	#4
mike@x-ph.com BimmerPost Supporting Vendor 24204 Rep 190,807 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Does not sound like a problem caused be the JB4 What are the codes you are getting? __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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03-20-2016, 04:17 PM	#5
arunser Registered 0 Rep 2 Posts Drives: 2011 BMW 335i xDrive Sedan Join Date: Oct 2014 Location: Portland, ME iTrader: (0)	I haven't had time to read the codes yet, this is due to the fact that when I restart the car the codes all disappear. When I get a chance I'll read them, it's the weirdest and most inconvenient thing. I almost got rear ended going though a tunnel today.
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