Engine Malfunction: Reduced Power...BIG PROBLEMS!!!

sales@ESSTuning · 09-12-2009, 05:57 PM

The only thing an aftermarket tune could do to cause a limp mode on this car would be to have the torque limits set incorrectly. Any issue outside of that is hardware failure related.

Eugene-TAIWAN · 09-12-2009, 10:43 PM

Quote:

Originally Posted by FStop7

So one car that's had this problem has Powerchip tuning

Another car has ESS

And another car has GIAC

This is a little concerning.

which GIAC car are talking about? Who's car?

FStop7 · 09-12-2009, 10:54 PM

Quote:

Originally Posted by Eugene-TAIWAN

which GIAC car are talking about? Who's car?

Your car... or did you remove the GIAC flash?

mixja · 09-13-2009, 12:42 AM

Quote:

Originally Posted by Rom3n

The only thing an aftermarket tune could do to cause a limp mode on this car would be to have the torque limits set incorrectly. Any issue outside of that is hardware failure related.

Thanks for the information - do you know how torque limit is actually monitored?

Eugene-TAIWAN · 09-13-2009, 02:34 AM

Quote:

Originally Posted by FStop7

Your car... or did you remove the GIAC flash?

no no, my car has a huge problem with the DSC system. The entire ECU needs to be changed and I don't know if it has to do with my pwr loss. Bu the car lost all DSC function ABS, Crusie control and auto handbrake on a hill. People tell me is will cause a loss in power because the ecu notice a loss in safety. Is it the actual reason for loss in pwr I don't really know, but I have to get all problems fixed first before I can pin point if it is the ICV or the fuel soenoid.

frankzlin79 · 09-13-2009, 12:07 PM

And exactly what is causing it? I am suppose to get a Powerchip tune in a month, and do not want this to happen to my car. Resetting my ECU after a tune will be a major pain to get my car reflashed by Powerchip.

Edman951 · 09-13-2009, 03:22 PM

Quote:

Originally Posted by Eugene-TAIWAN

no no, my car has a huge problem with the DSC system. The entire ECU needs to be changed and I don't know if it has to do with my pwr loss. Bu the car lost all DSC function ABS, Crusie control and auto handbrake on a hill. People tell me is will cause a loss in power because the ecu notice a loss in safety. Is it the actual reason for loss in pwr I don't really know, but I have to get all problems fixed first before I can pin point if it is the ICV or the fuel soenoid.

Your lose of DSC, is due to the angle sensor in the steering wheel.
Did you do the BMW performace wheel in the same time as ECU?
If the steering angle sensor looses it center reference point. the dcs is deativated, an you loose cruise control and all that stuff.
i had that problem when i did the performance wheel install, had to get it recalibrated at the dealer.

TLud · 09-13-2009, 04:07 PM

Quote:

Originally Posted by frankzlin79

And exactly what is causing it? I am suppose to get a Powerchip tune in a month, and do not want this to happen to my car. Resetting my ECU after a tune will be a major pain to get my car reflashed by Powerchip.

Resetting the ECU does not require a reflash.

Eugene-TAIWAN · 09-13-2009, 08:49 PM

Quote:

Originally Posted by Edman951

Your lose of DSC, is due to the angle sensor in the steering wheel.
Did you do the BMW performace wheel in the same time as ECU?
If the steering angle sensor looses it center reference point. the dcs is deativated, an you loose cruise control and all that stuff.
i had that problem when i did the performance wheel install, had to get it recalibrated at the dealer.

$hit, that is what I told the dealer and they said not that can't be it. Did you felt a lose in power?

///V\3Dude · 09-13-2009, 09:26 PM

Quote:

Originally Posted by Eugene-TAIWAN

How did you find out about this problem???

My service rep told me, when i pick it up.

Edman951 · 09-13-2009, 09:28 PM

I dont remember if it had a power lose.
It was the middle of winter during a 3 day storm here when it happened.
so wast really driving hard, specially with 10inch of snow on the road that day
I had it at the dealer the next morning after the performance steering wheel i had done miself.
See my post 18 here http://www.m3post.com/forums/showthread.php?t=159983

Eugene-TAIWAN · 09-13-2009, 10:53 PM

Quote:

Originally Posted by Edman951

Your lose of DSC, is due to the angle sensor in the steering wheel.
Did you do the BMW performace wheel in the same time as ECU?
If the steering angle sensor looses it center reference point. the dcs is deativated, an you loose cruise control and all that stuff.
i had that problem when i did the performance wheel install, had to get it recalibrated at the dealer.

I did the steering wheel first. then the ECU

Edman951 · 09-13-2009, 11:05 PM

Did you have the DSC malfunction after installing the steering wheel?

Eugene-TAIWAN · 09-14-2009, 12:37 AM

Quote:

Originally Posted by Edman951

Did you have the DSC malfunction after installing the steering wheel?

yes, it happened after I got it installed but not right away. Maybe within a week,

tom @ eas · 09-14-2009, 11:33 AM

Quote:

Originally Posted by FStop7

So one car that's had this problem has Powerchip tuning

Another car has ESS

And another car has GIAC

This is a little concerning.

Do you have a link to the GIAC-equipped M3 expericing this? We have 0 reports of any vehicles entering limp mode.

Eugene-TAIWAN · 09-14-2009, 09:23 PM

Quote:

Originally Posted by tom @ eas

Do you have a link to the GIAC-equipped M3 expericing this? We have 0 reports of any vehicles entering limp mode.

Tom, I think he was talking about my car. But I don't think its the file. I think it has to go with me DSC failure and now its causing things like (footwell module) error and the car just doesn't seem to be as responsive

tom @ eas · 09-14-2009, 09:34 PM

Quote:

Originally Posted by Eugene-TAIWAN

Tom, I think he was talking about my car. But I don't think its the file. I think it has to go with me DSC failure and now its causing things like (footwell module) error and the car just doesn't seem to be as responsive

Footwell module hosts a number of things, but I don't think it plays a part of how the DME functions.

Eugene-TAIWAN · 09-14-2009, 09:46 PM

Quote:

Originally Posted by tom @ eas

Footwell module hosts a number of things, but I don't think it plays a part of how the DME functions.

I don't it messes with the DME aswell but after my whole DSC ECU being broken and now just waiting for a new ECU the car just feels slow and it is I have timed myself on the vbox

kffighter · 09-15-2009, 01:58 PM

I got 4 malfunctions last night. (1) Engine malfunction - reduced power, (2) DSC malfunction, (3) DBC malfunction, and (4) start assist malfunction. Service tech at BMW San Diego thinks it is a DSC sensor malfunction. I'm taking it in tomorrow. I have Dinan exhaust and ECU. I'll let you know the results once thry fix it.

Ajax-Prime · 09-15-2009, 03:37 PM

Just out of curiosity, what are the build dates of these cars?

Eugene-TAIWAN · 09-15-2009, 05:52 PM

Quote:

Originally Posted by kffighter

I got 4 malfunctions last night. (1) Engine malfunction - reduced power, (2) DSC malfunction, (3) DBC malfunction, and (4) start assist malfunction. Service tech at BMW San Diego thinks it is a DSC sensor malfunction. I'm taking it in tomorrow. I have Dinan exhaust and ECU. I'll let you know the results once thry fix it.

Oh man, that is like the samething what happened to my car except that I never got a engine malfunction light. Let us know what happens at the dealer

Eugene-TAIWAN · 09-15-2009, 05:54 PM

Quote:

Originally Posted by Ajax-Prime

Just out of curiosity, what are the build dates of these cars?

Mine was built in 2007

09-12-2009, 05:57 PM	#23
sales@ESSTuning 391 Rep 3,149 Posts Drives: ESS M3 / M4 Join Date: May 2007 Location: AZ iTrader: (6)	The only thing an aftermarket tune could do to cause a limp mode on this car would be to have the torque limits set incorrectly. Any issue outside of that is hardware failure related.
	Appreciate 0 Quote

09-13-2009, 12:07 PM	#28
frankzlin79 Lieutenant Colonel 265 Rep 1,696 Posts Drives: 2018 M3 Join Date: Oct 2008 Location: Houston, Texas iTrader: (5)	And exactly what is causing it? I am suppose to get a Powerchip tune in a month, and do not want this to happen to my car. Resetting my ECU after a tune will be a major pain to get my car reflashed by Powerchip.
	Appreciate 0 Quote

09-13-2009, 09:28 PM	#33
Edman951 Second Lieutenant 50 Rep 287 Posts Drives: 2014 i3, Capparis White Join Date: Nov 2006 Location: Montreal, Quebec iTrader: (1)	I dont remember if it had a power lose. It was the middle of winter during a 3 day storm here when it happened. so wast really driving hard, specially with 10inch of snow on the road that day I had it at the dealer the next morning after the performance steering wheel i had done miself. See my post 18 here http://www.m3post.com/forums/showthread.php?t=159983
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09-13-2009, 11:05 PM	#35
Edman951 Second Lieutenant 50 Rep 287 Posts Drives: 2014 i3, Capparis White Join Date: Nov 2006 Location: Montreal, Quebec iTrader: (1)	Did you have the DSC malfunction after installing the steering wheel?
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09-15-2009, 01:58 PM	#41
kffighter New Member 0 Rep 6 Posts Drives: 2008 BMW M3 Convertible Join Date: Apr 2009 Location: San Diego iTrader: (0)	I got 4 malfunctions last night. (1) Engine malfunction - reduced power, (2) DSC malfunction, (3) DBC malfunction, and (4) start assist malfunction. Service tech at BMW San Diego thinks it is a DSC sensor malfunction. I'm taking it in tomorrow. I have Dinan exhaust and ECU. I'll let you know the results once thry fix it. __________________ 2008 BMW M3 Conv 2010 Porsche GT3 2007 Porsche 911 Turbo (gone) 2007 Porsche 911S (gone but always remembered - 1st Porsche)
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09-15-2009, 03:37 PM	#42
Ajax-Prime Hydrocarbon Man 33 Rep 427 Posts Drives: Still waiting on Stuttgart... Join Date: Mar 2008 Location: Houston iTrader: (3)	Just out of curiosity, what are the build dates of these cars?
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