DCT Downshift Throttle Blip

Hotrod0913 · 01-14-2011, 02:16 PM

I have 2011 E92 M3 DCT (June 2010 build). Prior to the 1,200 mile service, I got a very strong throttle blip on each downshift while driving in S5. Since the service, I get the strong blip on some downshifts, but not all. I don't see any pattern for the blips. There was no indication that they made any software changes at the service, but who knows. Has anyone else experienced this, or does anyone have any suggestions?

Thanks.

BCA · 01-14-2011, 02:20 PM

Are you saying that the blips vary when you are in S5, or that you notice blips only in some modes? Throttle blips only occur in S4 and above (not sure about the D modes...I think maybe D5 blips).

If you are in S5 all the time and you notice differences in the blips, I'm not sure what to tell you. Maybe it's just that you can hear the blips more in certain situations, or when downshifting at relatively high rpm??

Definitive · 01-14-2011, 02:21 PM

When my dad drove my M he noticed the blips were very subdued in his M. Took him a while but figured out that when Dinan did his Tune, they used a version of the software that was older. They redid the tune with current software and now it is just like mine.

Hope this helps.

D

OC3 · 01-14-2011, 02:25 PM

Quote:

Originally Posted by Definitive

When my dad drove my M he noticed the blips were very subdued in his M. Took him a while but figured out that when Dinan did his Tune, they used a version of the software that was older. They redid the tune with current software and now it is just like mine.

Hope this helps.

D

So, according to that logic, the dealer updated OP's M3 w/ an older software...?

Definitive · 01-14-2011, 02:32 PM

Was just saying that it could be software related. Didn't say that this was his issue. Just because my worthless comments dont help anyone, doesnt mean I cant post them...

D

sameh · 01-14-2011, 02:43 PM

OP please be a little more specific. But let's see if this answers your question:
Blips happen MAINLY on S4,5

OC3 · 01-14-2011, 02:46 PM

Quote:

Originally Posted by Definitive

Was just saying that it could be software related. Didn't say that this was his issue. Just because my worthless comments dont help anyone, doesnt mean I cant post them...

D

Didn't say worthless... just wondering what you were saying.

Quote:

Originally Posted by sameh

OP please be a little more specific. But let's see if this answers your question:
Blips happen MAINLY on S4,5

^+1 Is the OP saying this difference is occurring under the same conditions? (i.e. S4/S5 and at same/similar RPM(s) when downshifting?)

Hotrod0913 · 01-14-2011, 02:50 PM

Yes. I am comparing driving in S5 prior to service to S5 after service. I think I am comparing similar RPM, but it is hard to know for sure. I have had the lack of a blip at various RPMs.

OC3 · 01-14-2011, 02:55 PM

Well, prior to the 1,200 mile service, I don't know that you can (or, "should") downshift to get a nice high RPM blip. I mean, did you used to downshift & wind up at 7,500 RPM & such?

Hotrod0913 · 01-14-2011, 02:59 PM

No, I never let it get above 5,000 RPM prior to service.

kaykay · 01-14-2011, 03:24 PM

Quote:

Originally Posted by OC3

So, according to that logic, the dealer updated OP's M3 w/ an older software...?

LOL

Quote:

Originally Posted by Definitive

Was just saying that it could be software related. Didn't say that this was his issue. Just because my worthless comments dont help anyone, doesnt mean I cant post them...

D

LOL Part II

Blips should not be affected by a 1,200 mile service. My cars blips just fine before and after as does my buddy's 2011 E92 I drove yesterday after his service.

Take it to your dealer, sit with the shop mechanic and explain your situation to him. Most likely you're in the wrong mode (S4/S5 for downshift-rev match) or you don't know how to drive.

sig5x · 01-14-2011, 03:46 PM

I've found that the throttle blips vary in audible intensity based on the throttle position and other conditions (coasting downhill, full throttle accel, etc.), for a given Drivelogic setting (usually drive in S4).

008 · 01-14-2011, 05:05 PM

The throttle blips are RPM dependant. The point of blipping the throttle is to rev match the rpms between gears. The higher the rpm when you downshift the more pronounced the blip will be.

LemonOne · 01-14-2011, 07:53 PM

A good or "satisfying" blip occurs between 3000rpm and 5000rpm (more intensive when the M mode is on). It really depends what rpm and what gear you are in.

And those of you who know how to heel-and-toe in manual(6MT), you can actually blip in S3 mode as well. Tap your gas as you downshift!

Radiation Joe · 01-15-2011, 12:12 PM

Don't forget that the car adapts over time. The 1200 mile service might have cleared the adaptations. The old behavior will come back over time unless you've changed your driving style.

sensi09 · 01-15-2011, 02:56 PM

I don't see how a rev-match can be more aggressive. If you drop down to say 3rd, you can only rev-match a certain amount to get smooth and proper downshift.

01-14-2011, 02:16 PM	#1
Hotrod0913 Registered 2 Rep 3 Posts Drives: '11 M3 Join Date: Jan 2011 Location: Philadelphia, PA iTrader: (0)	DCT Downshift Throttle Blip I have 2011 E92 M3 DCT (June 2010 build). Prior to the 1,200 mile service, I got a very strong throttle blip on each downshift while driving in S5. Since the service, I get the strong blip on some downshifts, but not all. I don't see any pattern for the blips. There was no indication that they made any software changes at the service, but who knows. Has anyone else experienced this, or does anyone have any suggestions? Thanks.
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01-14-2011, 02:20 PM	#2
BCA Captain 23 Rep 793 Posts Drives: 2015 M3 Join Date: Feb 2006 Location: Houston, TX iTrader: (1)	Are you saying that the blips vary when you are in S5, or that you notice blips only in some modes? Throttle blips only occur in S4 and above (not sure about the D modes...I think maybe D5 blips). If you are in S5 all the time and you notice differences in the blips, I'm not sure what to tell you. Maybe it's just that you can hear the blips more in certain situations, or when downshifting at relatively high rpm?? __________________ 2017 Porsche 911 Carrera S 2019 Porsche Cayenne Past BMWs: 2015 M3, 2014 550i, 2013 M3 ZCP, 2012 535i, 2011 E90 335i, 2009 E90 M3, 2008 X5, 2006 330i, 2004 330i
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01-14-2011, 02:21 PM	#3
Definitive definitivecars.com 447 Rep 3,832 Posts Drives: Elsa - 2015 F80 M3 - YMB/SS Join Date: Aug 2006 Location: So Cal iTrader: (3) Garage List 2011 E90 M3 [6.66] 2009 (Lease up Sept ... [0.00] 2007 (Lease up 6/19 ... [0.00] 2007 (Lease up Octo ... [0.00]	When my dad drove my M he noticed the blips were very subdued in his M. Took him a while but figured out that when Dinan did his Tune, they used a version of the software that was older. They redid the tune with current software and now it is just like mine. Hope this helps. D
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01-14-2011, 02:32 PM	#5
Definitive definitivecars.com 447 Rep 3,832 Posts Drives: Elsa - 2015 F80 M3 - YMB/SS Join Date: Aug 2006 Location: So Cal iTrader: (3) Garage List 2011 E90 M3 [6.66] 2009 (Lease up Sept ... [0.00] 2007 (Lease up 6/19 ... [0.00] 2007 (Lease up Octo ... [0.00]	Was just saying that it could be software related. Didn't say that this was his issue. Just because my worthless comments dont help anyone, doesnt mean I cant post them... D
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01-14-2011, 02:43 PM	#6
sameh Lieutenant Colonel 185 Rep 1,529 Posts Drives: 2015 Porsche 911S Join Date: Aug 2010 Location: Texas iTrader: (0)	OP please be a little more specific. But let's see if this answers your question: Blips happen MAINLY on S4,5 __________________ 2011 E92 JB/BL/DCT--->80K Miles 2015 F80 SS/SO/DCT?->28K Miles 2015 Porsche 911S
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01-14-2011, 02:50 PM	#8
Hotrod0913 Registered 2 Rep 3 Posts Drives: '11 M3 Join Date: Jan 2011 Location: Philadelphia, PA iTrader: (0)	Yes. I am comparing driving in S5 prior to service to S5 after service. I think I am comparing similar RPM, but it is hard to know for sure. I have had the lack of a blip at various RPMs.
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01-14-2011, 02:55 PM	#9
OC3 Havin' a blast! 176 Rep 4,846 Posts Drives: 2013 M3 E92 Jerez Blk DCT ZCP Join Date: Nov 2010 Location: SoCal iTrader: (1)	Well, prior to the 1,200 mile service, I don't know that you can (or, "should") downshift to get a nice high RPM blip. I mean, did you used to downshift & wind up at 7,500 RPM & such? __________________ BRP 1:56 \| CVR 2:01 \| ACS 1:53 \| WSIR 1:34
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01-14-2011, 02:59 PM	#10
Hotrod0913 Registered 2 Rep 3 Posts Drives: '11 M3 Join Date: Jan 2011 Location: Philadelphia, PA iTrader: (0)	No, I never let it get above 5,000 RPM prior to service.
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01-14-2011, 03:46 PM	#12
sig5x Second Lieutenant 31 Rep 212 Posts Drives: e92 ZCP Join Date: Dec 2009 Location: USA iTrader: (0)	I've found that the throttle blips vary in audible intensity based on the throttle position and other conditions (coasting downhill, full throttle accel, etc.), for a given Drivelogic setting (usually drive in S4).
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01-14-2011, 05:05 PM	#13
008 Sexual Philanthropist 5 Rep 319 Posts Drives: 2011 E92 M3 Join Date: Jan 2010 Location: Houston iTrader: (0)	The throttle blips are RPM dependant. The point of blipping the throttle is to rev match the rpms between gears. The higher the rpm when you downshift the more pronounced the blip will be. __________________ 2011 E92 M3 AW/SC DCT, ZCV bought 11/10 sold 9/11
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01-14-2011, 07:53 PM	#14
LemonOne Major 850 Rep 1,106 Posts Drives: ///Most Powerful Letter Join Date: Oct 2009 Location: TN iTrader: (0)	A good or "satisfying" blip occurs between 3000rpm and 5000rpm (more intensive when the M mode is on). It really depends what rpm and what gear you are in. And those of you who know how to heel-and-toe in manual(6MT), you can actually blip in S3 mode as well. Tap your gas as you downshift! Last edited by LemonOne; 01-14-2011 at 07:59 PM..
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01-15-2011, 12:12 PM	#15
Radiation Joe Veni Vidi Vici 97 Rep 2,750 Posts Drives: '11 JB/BBe-6sp-e90 Join Date: Jul 2008 Location: Macungie PA iTrader: (0) Garage List 2011 e90 M3-Sold [8.50] 2003 RS6 - Sold [0.00] 2009 e90 M3 - Gone [0.00] 2003 M3 SOLD [0.00] old 2002 [10.00]	Don't forget that the car adapts over time. The 1200 mile service might have cleared the adaptations. The old behavior will come back over time unless you've changed your driving style. __________________ Dinan compliment of stuff plus PF rotors and RG63s. Enough for now. Why, yes. I am an abrasive bastard.
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01-15-2011, 02:56 PM	#16
sensi09 Lieutenant Colonel 30 Rep 1,789 Posts Drives: . Join Date: Dec 2010 Location: socal iTrader: (1)	I don't see how a rev-match can be more aggressive. If you drop down to say 3rd, you can only rev-match a certain amount to get smooth and proper downshift.
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