JB4 keeps triggering half engine light

JBE90335 · 11-19-2012, 04:34 PM

Every time I WOT with my JB4 on map 1 the engine malfunction light comes on. The funny thing is, is that it doesn't run differently no reduced power or anything. Any thoughts? Maybe time for new plugs? I'm at 43k miles.

Sparky68 · 11-19-2012, 04:36 PM

Boost leak i bet.
Having the same issue.

AK 335i · 11-19-2012, 04:38 PM

can you log the code>?

slostjoe · 11-19-2012, 04:42 PM

Quote:

Originally Posted by smi1gj

can you log the code>?

^This depends what code it's throwing.

AK 335i · 11-19-2012, 04:47 PM

Quote:

Originally Posted by slostjoe

^This depends what code it's throwing.

yea.. i guess what im trying to say is that without logging, its a crap shoot. Unless you can see/hear/smell something obvious.

OP if you cant log/dont have a cable/have no interest in logging

At 43K yes do your self a favor and change plugs. Change the oil too and the air filter. Other than that, if you still have issues you have to get some real info from your car and logging is the easiest way to do so.

JBE90335 · 11-19-2012, 10:14 PM

I'm going to try and change the plugs since they need to be done anyway. I can't log as I use a mac, but i've been reading the codes through the dash. Is there a site around that I can look up what these codes mean?

Redrkt503 · 11-19-2012, 10:21 PM

Just google the codes

11-19-2012, 04:34 PM	#1
JBE90335 Captain 27 Rep 647 Posts Drives: 2007 E90 335i Join Date: Jun 2011 Location: Dallas, TX iTrader: (0)	JB4 keeps triggering half engine light Every time I WOT with my JB4 on map 1 the engine malfunction light comes on. The funny thing is, is that it doesn't run differently no reduced power or anything. Any thoughts? Maybe time for new plugs? I'm at 43k miles.
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11-19-2012, 04:36 PM	#2
Sparky68 Brigadier General 684 Rep 4,261 Posts Drives: 2016 M2 Alpine White Join Date: Oct 2012 Location: Cambs UK iTrader: (11) Garage List 2016 BMW M2 [0.50] 2017 BMW F30 330D [0.00] 2014 M135 [0.00] 2007 BMW 335i [0.00]	Boost leak i bet. Having the same issue. __________________ OG M2 7sp DCT Masata FMIC - Masata Boost Pipe - Cobra Catless DP - Powervalve Exhaust - Devilsown Methanol Injection BM3 Stage 2
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11-19-2012, 04:38 PM	#3
AK 335i Major 48 Rep 1,290 Posts Drives: black 335i E90 Join Date: Sep 2012 Location: boynton beach iTrader: (0)	can you log the code>? __________________ - Proven Power Tampa Built 6466 ST N54 6AT WR 711whp 637wtq -
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11-19-2012, 10:14 PM	#6
JBE90335 Captain 27 Rep 647 Posts Drives: 2007 E90 335i Join Date: Jun 2011 Location: Dallas, TX iTrader: (0)	I'm going to try and change the plugs since they need to be done anyway. I can't log as I use a mac, but i've been reading the codes through the dash. Is there a site around that I can look up what these codes mean?
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11-19-2012, 10:21 PM	#7
Redrkt503 Lieutenant 31 Rep 439 Posts Drives: E92 335is Join Date: Jan 2012 Location: Ft. Lauderdale, FL iTrader: (0)	Just google the codes __________________ 2011 335is "Redrkt" 6 MT DocRace 6266 Single Turbo - Fuel it stage 3 LPFP - Fuel it PI - spec stage 3+ clutch - mfactory SM flywheel - 100% E85 - VRSF 7.5" intercooler - VRSF charge pipe w/ HKS BOV - JB4 - MHD back end flash 768 whp 695 ft lbs - E85 - 32PSI
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