NEED HELP : Limp Mode as we call it.....

xballashakalax · 11-14-2015, 10:30 PM

Everyone,

So from what Ive read, my car has been familiar with the limp mode condition.
Background info: Before installing my BMS and catless downpipes, I had never seen or had this issue.

After install, the issue would come up periodically upon WOT/hard acceleration, car would lose power and I would need to pull over, turn off, and turn back on, issue would go away.

After about 5 months, I have now removed the BMS tune, my e-mann race exhaust, and ONLY have the catless DP's on the car.

I had been driving the car without the drivetrain malfunction for a good 3 weeks, no issues ......even with the catless DPs.....

SUDDENLY, this past 3 days, I cannot make a proper point and to point B trip without the car going into limp mode, 8/10 times I punch the throttle ( and its not even a hard acceleration) I would even just a moderate acceleration the car losses power.....

.....I can feel the car getting weird on me when I accelerate so I simple ease off the throttle to prevent this from happening.......its getting more and more frequent now.

ANY SUGGESTIONS??? Getting little worried. I have service set up next week. Taking to the same dealer that services my car with no issues with the BMS and same DPs on the car.

sdshah · 11-14-2015, 11:49 PM

Take all the mods off before that service is my opinion. Let them fix the issue without blaming it on something else. It's 95% not because of the mods but it needs to be addressed without them on.

bmellion · 11-15-2015, 07:14 AM

Should have spent the cash on the Dinan tune and kept the e-race. Dump the DP's. I have no issues at all.

Skeeter_f10 · 11-15-2015, 09:27 AM

Maybe your spark plugs are bad.

13M5F10 · 11-15-2015, 09:57 AM

Quote:

Originally Posted by Skeeter_f10

Maybe your spark plugs are bad.

That would be my first thought too. Get those checked out ASAP. Same issue here when I had BMS

xballashakalax · 11-15-2015, 03:48 PM

Thank you for the replies

ImpetuousRacer · 11-15-2015, 08:04 PM

I had this issue. 2 Bad coils. Check that out. Got it after installing BMS, not sure if coincidental or not.

xballashakalax · 11-15-2015, 08:41 PM

Quote:

Originally Posted by ImpetuousRacer

I had this issue. 2 Bad coils. Check that out. Got it after installing BMS, not sure if coincidental or not.

Coils?

ImpetuousRacer · 11-17-2015, 01:05 PM

Ignition coil, example here:
http://www.buyautoparts.com/plabuyno...7LlhoCyMHw_wcB

There is one for each cylinder. One was visibly split and damaged, other one wasn't visible but they read code for which cylinder had misfire.

Thing is, sometimes I didn't feel a misfire, I'd stomp gas, it would immediately bog and go into limp mode with BMS.

allmotor_2000 · 11-17-2015, 01:08 PM

Quote:

Originally Posted by xballashakalax

Everyone,

So from what Ive read, my car has been familiar with the limp mode condition.
Background info: Before installing my BMS and catless downpipes, I had never seen or had this issue.

After install, the issue would come up periodically upon WOT/hard acceleration, car would lose power and I would need to pull over, turn off, and turn back on, issue would go away.

After about 5 months, I have now removed the BMS tune, my e-mann race exhaust, and ONLY have the catless DP's on the car.

I had been driving the car without the drivetrain malfunction for a good 3 weeks, no issues ......even with the catless DPs.....

SUDDENLY, this past 3 days, I cannot make a proper point and to point B trip without the car going into limp mode, 8/10 times I punch the throttle ( and its not even a hard acceleration) I would even just a moderate acceleration the car losses power.....

.....I can feel the car getting weird on me when I accelerate so I simple ease off the throttle to prevent this from happening.......its getting more and more frequent now.

ANY SUGGESTIONS??? Getting little worried. I have service set up next week. Taking to the same dealer that services my car with no issues with the BMS and same DPs on the car.

Have you logged anything, checked codes...etc?

MpowerMike · 05-28-2016, 11:34 PM

Any updates on this?

celicatoe46m3 · 05-29-2016, 12:08 AM

Is it good insurance to just change them while the spark plugs are changed? Since it's not very expensive to change all 8.

greentrbo95gst · 05-31-2016, 09:22 AM

Spark plugs and coils. Your catless downpipes will foul the plugs without a proper tune.

11-14-2015, 10:30 PM	#1
xballashakalax Lieutenant 49 Rep 540 Posts Drives: 2013 F10 M5 Join Date: Oct 2006 Location: LA iTrader: (3)	NEED HELP : Limp Mode as we call it..... Everyone, So from what Ive read, my car has been familiar with the limp mode condition. Background info: Before installing my BMS and catless downpipes, I had never seen or had this issue. After install, the issue would come up periodically upon WOT/hard acceleration, car would lose power and I would need to pull over, turn off, and turn back on, issue would go away. After about 5 months, I have now removed the BMS tune, my e-mann race exhaust, and ONLY have the catless DP's on the car. I had been driving the car without the drivetrain malfunction for a good 3 weeks, no issues ......even with the catless DPs..... SUDDENLY, this past 3 days, I cannot make a proper point and to point B trip without the car going into limp mode, 8/10 times I punch the throttle ( and its not even a hard acceleration) I would even just a moderate acceleration the car losses power..... .....I can feel the car getting weird on me when I accelerate so I simple ease off the throttle to prevent this from happening.......its getting more and more frequent now. ANY SUGGESTIONS??? Getting little worried. I have service set up next week. Taking to the same dealer that services my car with no issues with the BMS and same DPs on the car. __________________ ------------------------------------------------- 2008 Interlogos blue e90 ( sold) 2011 MB c63 Amg ( sold) 2013 Cad cts-v (sold) 2014 Bmw F10 M5 (sold) 2016 BMW i8
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11-14-2015, 11:49 PM	#2
sdshah Banned 849 Rep 1,386 Posts Drives: F85 \| Panamera GTS Join Date: Jul 2011 Location: USA iTrader: (2)	Take all the mods off before that service is my opinion. Let them fix the issue without blaming it on something else. It's 95% not because of the mods but it needs to be addressed without them on.
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11-15-2015, 07:14 AM	#3
bmellion Captain 159 Rep 675 Posts Drives: 2020 M5 Join Date: Apr 2012 Location: Boca Raton, FL iTrader: (1)	Should have spent the cash on the Dinan tune and kept the e-race. Dump the DP's. I have no issues at all. __________________ 2020 BMW M5 2014 BMW M5 Competition Pack, Dinan Stage 2, Full Eisenmann Race, MSR Intake and lots of carbon fiber... 2013 BMW X5M, Dinan Exhaust, Dinan Stage 1, Dinan Suspension (gone) 2013 BMW M6 Eisenmann Race(gone)
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11-15-2015, 09:27 AM	#4
Skeeter_f10 Lieutenant 56 Rep 406 Posts Drives: f10 m5 Join Date: Oct 2014 Location: socal iTrader: (0)	Maybe your spark plugs are bad.
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11-15-2015, 03:48 PM	#6
xballashakalax Lieutenant 49 Rep 540 Posts Drives: 2013 F10 M5 Join Date: Oct 2006 Location: LA iTrader: (3)	Thank you for the replies __________________ ------------------------------------------------- 2008 Interlogos blue e90 ( sold) 2011 MB c63 Amg ( sold) 2013 Cad cts-v (sold) 2014 Bmw F10 M5 (sold) 2016 BMW i8
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11-15-2015, 08:04 PM	#7
ImpetuousRacer First Lieutenant 67 Rep 327 Posts Drives: 2017 Tesla Model X P100D Join Date: Oct 2012 Location: Menlo Park, CA iTrader: (0) Garage List 2013 BMW M5 [0.00]	I had this issue. 2 Bad coils. Check that out. Got it after installing BMS, not sure if coincidental or not.
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11-17-2015, 01:05 PM	#9
ImpetuousRacer First Lieutenant 67 Rep 327 Posts Drives: 2017 Tesla Model X P100D Join Date: Oct 2012 Location: Menlo Park, CA iTrader: (0) Garage List 2013 BMW M5 [0.00]	Ignition coil, example here: http://www.buyautoparts.com/plabuyno...7LlhoCyMHw_wcB There is one for each cylinder. One was visibly split and damaged, other one wasn't visible but they read code for which cylinder had misfire. Thing is, sometimes I didn't feel a misfire, I'd stomp gas, it would immediately bog and go into limp mode with BMS.
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05-28-2016, 11:34 PM	#11
MpowerMike Major 360 Rep 1,123 Posts Drives: 2012 IB BMW M5 Join Date: May 2014 Location: T.O. Canada iTrader: (1)	Any updates on this?
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05-29-2016, 12:08 AM	#12
celicatoe46m3 Private First Class 47 Rep 170 Posts Drives: E60 M5 & E46 M3 Join Date: Dec 2010 Location: Vancouver iTrader: (3)	Is it good insurance to just change them while the spark plugs are changed? Since it's not very expensive to change all 8.
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05-31-2016, 09:22 AM	#13
greentrbo95gst Brigadier General 1231 Rep 4,106 Posts Drives: 21 M5 Comp Join Date: Jan 2011 Location: Orange County iTrader: (6)	Spark plugs and coils. Your catless downpipes will foul the plugs without a proper tune.
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