DCT drivers chime in

kaykay · 01-18-2011, 12:50 AM

Drove in D1/D2 today for 10 minutes, wanted to see what that mode was all about. Not bad BUT there's a nasty "tug" from standstill - acceleration.

Anyone get a "tug" from a 2nd gear - onward start??

Might have to take her in to the dealer... Don't get it...

Start from 2nd should be smooth... 1st is smooth...

mkoesel · 01-18-2011, 08:50 AM

I'm not sure what you mean by "tug" exactly.

JtBlk M3 · 01-18-2011, 10:15 AM

yea what do you really mean by tug?? ive ben driving in D1/D2 somewhat often lately bc the black ice and snow conditions and its been fine, super smooth off the line, very soft ride...let us know what ur experience was

Doctor J · 01-18-2011, 10:38 AM

Turn off the "power" buttom for more gentle throttle response

LemonOne · 01-18-2011, 11:37 AM

D2 mode should be smooth, D1 is what I call the "snow mode" hence starts at 2nd gear. I wouldn't drive it in D1 mode unless you are stuck in the snow or something.

persian54 · 01-18-2011, 12:59 PM

Quote:

Originally Posted by LemonOne

D2 mode should be smooth, D1 is what I call the "snow mode" hence starts at 2nd gear. I wouldn't drive it in D1 mode unless you are stuck in the snow or something.

or feel like being slow and steady with precious cargo

kaykay · 01-18-2011, 03:05 PM

I would define this "tug" more like a jerk I guess. The car moves (gear engages) about 1/2 second after I depress the accelerator. Not smooth, feels like the accelerator press -> gear engaging is jerky and delayed. Strange.

persian54 · 01-18-2011, 03:20 PM

Quote:

Originally Posted by kaykay

I would define this "tug" more like a jerk I guess. The car moves (gear engages) about 1/2 second after I depress the accelerator. Not smooth, feels like the accelerator press -> gear engaging is jerky and delayed. Strange.

If you're local enough in SoCal, I'd be more than happy to drive it for you, and then you drive mine, and we can see if it really is an issue

there are plenty of us local

jkcrowell · 01-18-2011, 10:06 PM

I have a DCT and I don't feel a tug anywhere. I do run the latest DCT software though, it was actually updated before the car came into my possession (08 CPO).

I think if you do something like throw it from reverse into first and nail the gas, it might do that. But not from a standstill like you have described. I can start in 2nd in D2 just fine, and have several times.

To me, this sounds like the DCT bug, but with as many posts as you have I'd think you'd be aware of that one?

http://www.m3post.com/forums/showthread.php?t=231020

sensi09 · 01-18-2011, 10:17 PM

So I tried D1 and D2 and thought both were smooth. In the past though, I've gotten a bit of jerk off the line in S5.

One thing I noticed about D1/D2 is that with leisurely driving, gear changes occurred around 4-4.5K. It even held a lower gear for while after accelerating a bit. Would have expected for gear changes to happen a bit sooner in this mode.

kaykay · 01-19-2011, 02:20 AM

I have the latest DCT software, my car is a June/July 2010 build and the DCT software was updated in October.

I'm bringing her in, not normal to get a tug like that from 2nd gear from a stop.

Start from 1st is smooth, but there's a lag between the time the accelerator is depressed -> gear engaged -> movement in 2nd (regardless of mode).

Will update soon...

FruitCake · 01-19-2011, 02:27 AM

no tug here..smooth as butter

sheepboy · 01-19-2011, 12:03 PM

D1 w/ power button off gives a smooth 2nd gear start and barely noticeable gear changes here. My wife has a MB R350 with the 7-speed G-Tronic gearbox and I think my M3 does smoother gear changes with those settings then her car in comfort mode.

01-18-2011, 12:50 AM	#1
kaykay Lieutenant Colonel 90 Rep 1,769 Posts Drives: 2011 E92 M3 ZCP Join Date: Apr 2010 Location: SoCal iTrader: (0) Garage List 2011 E93 328i Conve ... [9.50] 2011 E92 M3 ZCP [8.66] 2008 550i Sport [10.00]	DCT drivers chime in Drove in D1/D2 today for 10 minutes, wanted to see what that mode was all about. Not bad BUT there's a nasty "tug" from standstill - acceleration. Anyone get a "tug" from a 2nd gear - onward start?? Might have to take her in to the dealer... Don't get it... Start from 2nd should be smooth... 1st is smooth... __________________ '12 CLS550 Palladium Silver - loaded '11 E92 M3 ZCP - SG/B-EXT/CF, M-DCT, loaded '11 E93 328i, BSM over Saddle Brown, sport, loaded '08 550i M-Sport, Carbon Black (Gone but not forgotten), '06 W211 E55 AMG (Gone, miss this animal),'01 E39 540i Sport
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01-18-2011, 08:50 AM	#2
mkoesel Moderator 7515 Rep 19,368 Posts Drives: No BMW for now Join Date: Jun 2006 Location: Canton, MI iTrader: (1)	I'm not sure what you mean by "tug" exactly.
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01-18-2011, 10:15 AM	#3
JtBlk M3 JtBlk M3 19 Rep 118 Posts Drives: BMW E92 M3 DCT Join Date: Dec 2010 Location: Forest Hills iTrader: (0)	yea what do you really mean by tug?? ive ben driving in D1/D2 somewhat often lately bc the black ice and snow conditions and its been fine, super smooth off the line, very soft ride...let us know what ur experience was
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01-18-2011, 10:38 AM	#4
Doctor J Captain 33 Rep 741 Posts Drives: 2010 E93 M3 DCT Join Date: Mar 2010 Location: Vancouver BC iTrader: (0)	Turn off the "power" buttom for more gentle throttle response __________________ 2010 BMW M3 vert with DCT & Akra (sold) 2012 Porsche 911 Turbo S
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01-18-2011, 11:37 AM	#5
LemonOne Major 708 Rep 1,079 Posts Drives: ///Most Powerful Letter Join Date: Oct 2009 Location: East Coast iTrader: (0)	D2 mode should be smooth, D1 is what I call the "snow mode" hence starts at 2nd gear. I wouldn't drive it in D1 mode unless you are stuck in the snow or something.
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01-18-2011, 03:05 PM	#7
kaykay Lieutenant Colonel 90 Rep 1,769 Posts Drives: 2011 E92 M3 ZCP Join Date: Apr 2010 Location: SoCal iTrader: (0) Garage List 2011 E93 328i Conve ... [9.50] 2011 E92 M3 ZCP [8.66] 2008 550i Sport [10.00]	I would define this "tug" more like a jerk I guess. The car moves (gear engages) about 1/2 second after I depress the accelerator. Not smooth, feels like the accelerator press -> gear engaging is jerky and delayed. Strange. __________________ '12 CLS550 Palladium Silver - loaded '11 E92 M3 ZCP - SG/B-EXT/CF, M-DCT, loaded '11 E93 328i, BSM over Saddle Brown, sport, loaded '08 550i M-Sport, Carbon Black (Gone but not forgotten), '06 W211 E55 AMG (Gone, miss this animal),'01 E39 540i Sport
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01-18-2011, 10:06 PM	#9
jkcrowell Private 3 Rep 62 Posts Drives: 2008 Interlagos Blue E92 M3 Join Date: Aug 2007 Location: Irvine, Ca iTrader: (0)	I have a DCT and I don't feel a tug anywhere. I do run the latest DCT software though, it was actually updated before the car came into my possession (08 CPO). I think if you do something like throw it from reverse into first and nail the gas, it might do that. But not from a standstill like you have described. I can start in 2nd in D2 just fine, and have several times. To me, this sounds like the DCT bug, but with as many posts as you have I'd think you'd be aware of that one? http://www.m3post.com/forums/showthread.php?t=231020
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01-18-2011, 10:17 PM	#10
sensi09 Lieutenant Colonel 30 Rep 1,789 Posts Drives: . Join Date: Dec 2010 Location: socal iTrader: (1)	So I tried D1 and D2 and thought both were smooth. In the past though, I've gotten a bit of jerk off the line in S5. One thing I noticed about D1/D2 is that with leisurely driving, gear changes occurred around 4-4.5K. It even held a lower gear for while after accelerating a bit. Would have expected for gear changes to happen a bit sooner in this mode.
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01-19-2011, 02:20 AM	#11
kaykay Lieutenant Colonel 90 Rep 1,769 Posts Drives: 2011 E92 M3 ZCP Join Date: Apr 2010 Location: SoCal iTrader: (0) Garage List 2011 E93 328i Conve ... [9.50] 2011 E92 M3 ZCP [8.66] 2008 550i Sport [10.00]	I have the latest DCT software, my car is a June/July 2010 build and the DCT software was updated in October. I'm bringing her in, not normal to get a tug like that from 2nd gear from a stop. Start from 1st is smooth, but there's a lag between the time the accelerator is depressed -> gear engaged -> movement in 2nd (regardless of mode). Will update soon... __________________ '12 CLS550 Palladium Silver - loaded '11 E92 M3 ZCP - SG/B-EXT/CF, M-DCT, loaded '11 E93 328i, BSM over Saddle Brown, sport, loaded '08 550i M-Sport, Carbon Black (Gone but not forgotten), '06 W211 E55 AMG (Gone, miss this animal),'01 E39 540i Sport
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01-19-2011, 02:27 AM	#12
FruitCake Banned 88 Rep 1,680 Posts Drives: '10 E92 M3 Join Date: Nov 2008 Location: Los Angeles iTrader: (19)	no tug here..smooth as butter
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01-19-2011, 12:03 PM	#13
sheepboy Second Lieutenant 58 Rep 224 Posts Drives: 2011 E93 M3 Join Date: May 2010 Location: Boston iTrader: (0)	D1 w/ power button off gives a smooth 2nd gear start and barely noticeable gear changes here. My wife has a MB R350 with the 7-speed G-Tronic gearbox and I think my M3 does smoother gear changes with those settings then her car in comfort mode. __________________ 2011 M3 Convertible / IB / Black on CF interior / ZCW / ZPP / ZTP / 19"wheels / MDCT / Premium sound / iPod adapter / Alarm / Park distance control / HD radio / A big smile in my face!
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