JB4 problems

BrianT335i · 05-11-2015, 03:31 AM

Hey everyone recently had JB4 installed and absolutely love the results. Just one problem, it seems that every time I use map 5 it's like it misfires right when I hit around 60mph or after downshifting. I step on it and next thing I know a SES light pops up. I just thought okay I'll go to map one until I mod a little more but then it happened on map 1 a few times. So I tested it out on stock and there have been no problems so I can't think of what it could be. If anyone has had similar problems let me know or know what's going on please let me know.
Thank guys,
Brian

M.Power · 05-11-2015, 03:38 AM

Do you have a stock intercooler?

YouAreMyWorld · 05-11-2015, 05:31 AM

When was the last time you changed your Spark Plugs?

Acekid187 · 05-11-2015, 08:10 AM

Quote:

Originally Posted by YouAreMyWorld

When was the last time you changed your Spark Plugs?

+1 on spark plugs

335NJ · 05-11-2015, 10:03 AM

Plugs/coils.

See the misfire sticky.

Jeff@TopGearSolutions · 05-11-2015, 10:45 AM

http://www.e90post.com/forums/showthread.php?t=631829

BrianT335i · 05-11-2015, 11:43 AM

Quote:

Originally Posted by Gevojanyan

Do you have a stock intercooler?

Yes I do

BrianT335i · 05-11-2015, 11:44 AM

Quote:

Originally Posted by YouAreMyWorld

When was the last time you changed your Spark Plugs?

Bought the car about two months ago so not sure on what they did with service but I'm bringing it into bmw tomorrow for a little check up so isn't that something they will include in a service appointment if needed?

Mike@N54Tuning.com · 05-11-2015, 11:47 AM

Can you scan the car for codes with the JB4 (either from dash or USB Cable) and post them up. Will help pinpoint the issue.

Mike

BrianT335i · 05-11-2015, 11:48 AM

Quote:

Originally Posted by Mike@N54Tuning.com

Can you scan the car for codes with the JB4 (either from dash or USB Cable) and post them up. Will help pinpoint the issue.

Mike

I can try to do it later tonight. Thanks guys

BrianT335i · 05-11-2015, 01:04 PM

Seems like the more I search and the feedback from you guys everyone is agreeing that it is most likely the spark plugs. Will try to read codes tonight. Thanks everyone

924er · 05-11-2015, 02:06 PM

Misfires will happen more often when you are tuned. Both times I've had misfires were when I was running a tune but whenever I go back to stock I can never replicate it

mike@x-ph.com · 05-11-2015, 08:58 PM

Quote:

Originally Posted by BrianT335i

Seems like the more I search and the feedback from you guys everyone is agreeing that it is most likely the spark plugs. Will try to read codes tonight. Thanks everyone

I always suggest changing all 6 spark plugs when going from stock to tuned car.
Jb4 will expose the weak components in your car which sounds in this case to be the spark plugs.

Miko226 · 05-11-2015, 09:32 PM

Plugs / Coils and you'll be good to go.

05-11-2015, 03:31 AM	#1
BrianT335i Second Lieutenant 17 Rep 271 Posts Drives: 2009 BMW E90 335i M Sport Join Date: Apr 2015 Location: Gilroy, CA iTrader: (0)	JB4 problems Hey everyone recently had JB4 installed and absolutely love the results. Just one problem, it seems that every time I use map 5 it's like it misfires right when I hit around 60mph or after downshifting. I step on it and next thing I know a SES light pops up. I just thought okay I'll go to map one until I mod a little more but then it happened on map 1 a few times. So I tested it out on stock and there have been no problems so I can't think of what it could be. If anyone has had similar problems let me know or know what's going on please let me know. Thank guys, Brian
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05-11-2015, 03:38 AM	#2
M.Power Գեվոջանյան 305 Rep 1,100 Posts Drives: 2022 LP650 Urus/2023 F93 M8 Join Date: Feb 2015 Location: Los Angeles iTrader: (0)	Do you have a stock intercooler? __________________ Current: 23 Frozen Gray M8 Comp GC, 22 Viola Parsifae Lamborghini Urus, 11 Fire Orange E92 M3 6MT, 07 BSM E60 M5 6MT, 00 Imola E39 M5 Previous: 2019 BSM F90 M5 Comp, 2019 Giallo Auge Lamborghini Urus, 2011 Silverstone E92 M3
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05-11-2015, 05:31 AM	#3
YouAreMyWorld ///Project Aura 395 Rep 889 Posts Drives: Mineral White ///M-Sport 335i Join Date: Feb 2015 Location: Los Angeles iTrader: (0)	When was the last time you changed your Spark Plugs?
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05-11-2015, 10:03 AM	#5
335NJ Colonel 538 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	Plugs/coils. See the misfire sticky.
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05-11-2015, 10:45 AM	#6
Jeff@TopGearSolutions 3482 Rep 79,210 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	http://www.e90post.com/forums/showthread.php?t=631829
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05-11-2015, 11:47 AM	#9
Mike@N54Tuning.com Joint Chiefs of Staff 5100 Rep 116,225 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	Can you scan the car for codes with the JB4 (either from dash or USB Cable) and post them up. Will help pinpoint the issue. Mike
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05-11-2015, 01:04 PM	#11
BrianT335i Second Lieutenant 17 Rep 271 Posts Drives: 2009 BMW E90 335i M Sport Join Date: Apr 2015 Location: Gilroy, CA iTrader: (0)	Seems like the more I search and the feedback from you guys everyone is agreeing that it is most likely the spark plugs. Will try to read codes tonight. Thanks everyone
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05-11-2015, 02:06 PM	#12
924er Colonel 356 Rep 2,049 Posts Drives: e92 335i '10 Join Date: Feb 2014 Location: Socal iTrader: (0)	Misfires will happen more often when you are tuned. Both times I've had misfires were when I was running a tune but whenever I go back to stock I can never replicate it __________________ '10 e92 N54 DCI intakes, ER chargepipe, TIAL BOV, VRSF 5in FMIC, BMS Downpipes COBB e30
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05-11-2015, 09:32 PM	#14
Miko226 Captain 63 Rep 722 Posts Drives: 11' 335d Join Date: Nov 2012 Location: Boca Raton, FL iTrader: (0)	Plugs / Coils and you'll be good to go. __________________ 11' m57 335d 165k Miles - JR 2, ATM Full Exhaust & Intake, Wagner FMIC, AAR Boost Pipe, AAR Swirl Delete, AAR EGR Delete 08' n54 135i FBO E85 - SOLD
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