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02-27-2009, 02:53 AM | #67 | |
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02-27-2009, 08:03 AM | #68 |
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Another childlike BMW driver that can't face reality...
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02-27-2009, 01:07 PM | #69 |
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Another DCT lag, am at my office and unfortunately don't know my vin.
Just got my '08 e93 10 days ago and its seems to be getting worse. Started as being mildly annoying but is now fully souring my feelings of the car.. Hope it gets sorted out.. |
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03-02-2009, 10:21 PM | #70 | |
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However that being said, I trust BMWAG will find a solution as someone posted that a new Progman release should be out this month with a fix It is an amazing, solid, extremely entertaining car to drive, other than the dam speed reduction, lag/hesitation, safety issue
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03-03-2009, 07:51 AM | #71 |
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I have lag going from 3rd to 2nd. it is so damn annoying!
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03-04-2009, 10:31 PM | #72 |
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Yeah I have experienced this issue myself and can reproduce it fairly easily now. My M3 is a March 08 production, and I had the software update done in December 08.
Before the update, I noticed a lot of lag between flicking a paddle and the DCT actually shifting.. I was also able to stall the engine while spinning the car out in wet parking lots. After the update, the DCT shift lightning fast.. meaning a flick of the paddle immediately executes a shift. Also, no more stalling. BUT, as the rest of you, I now have this 2nd gear lag myself. As detailed by many before, when slowing down for a turn, or doing a rolling stop sign, the DCT will shift down to 2nd but the clutch stays disengaged as the car thinks you might be slowing to a stop.. so essentially you are rolling at this point.. then you press the gas to go, but the clutch is not engaged so the engine management and DCT take a good 1-2 seconds to decide what to do next... if you pay close attention you will notice that the engine does not even rev up when you press the gas pedal.. the go pedal is basically doing nothing for a good 1-2 seconds which attributes to the panic feeling, especially if traffic is bearing down on you at the moment. Eventually the car realizes you want to GO, and now depending on how far you have pressed the gas pedal down while waiting, the engine will rev up and the car will either move ahead nicely or very fiercely. I don't have my VIN handy, but it sounds like BMW is working on a fix regardless. It is March now, so lets hope we can try the next software version soon. |
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03-05-2009, 02:55 AM | #73 | |
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03-05-2009, 06:09 AM | #74 |
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FFS are you guys still crying about how you can make the DCT "lag"!
If you drive it properly it doesn't occur. Free clue: use S3/4, use the paddles to ensure the DCT is in the gear you want, don't let the car make the anti-stall downshift for you thats just lazy and amateurish, when you are slowing, change down as you pass 1500revs. Its a auto-clutch manual not a torque-converter slushmatic...if you can't figure how to drive it properly maybe you should drive something a bit simpler. |
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03-05-2009, 06:19 AM | #75 |
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The lag simply shouldn't occur - fulstop. There is no excuse for it being there (after payng $$$ to get the DCT as an extra) and people shouldn't change their daily driving habits to accomodate it - let alone that if someone else gets the car then it becomes a safety issue for them.
Sure a solution is to downshift manualy to avoid the lag, but there are times that I just want the DCT to do proper gearchanges automatically without me worrying about this - that's part of the price I paid for it! BTW, when I forsee that the lag issue will hit me where I certainly don't want it then I downshift manually ahead of time and I am fine - but again the lag shouldn't be there. |
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03-05-2009, 07:55 AM | #76 | |
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Also, while putting the car into first gear will mitigate the lag most of the time, I find there are still rare cases when it won't. Particularly, when coming nearly to a complete stop, perhaps just 1 or 2 mph, and then nailing the gas. There is still a lag there although not nearly as pronounced as it is in 2nd gear. This may or may not be addressed when they address the 2nd gear issue or not. Personally I think it will because it seems to me they just need to keep the clutch engaged longer in general. It really should be engaged til just before the point of stalling. I think that what happened with the update is that they backed off clutch disengagement way too far in order to cure the stalling issue that people had. They need to find the happy medium between the two and all will be good. |
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03-05-2009, 08:32 AM | #77 | |
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03-05-2009, 08:37 AM | #78 | |
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Porsche have probably more experience of the technology than anyone and were working on their own version long before BMW started developing theirs but still didn't rush theirs to market until it was right, getting something to the market before anyone else isn't always the smartest decision, OK sometimes everything goes peachy but when it doesn't the annoyed customers and bad press that follows is hard to shake off. May I suggest those who think their DCT is perfectly acceptable the way it is then go and drive a PKG equipped Porsche and see if you still feel the same way. Not all DCTs are equal. |
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03-05-2009, 10:23 AM | #80 |
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I am experiencing this lag as well..
Sometimes starting out in 1st gear there is a huge lag.. and coasting between 3rd-2nd there is also sometimes a big lag.. It's not consistent though that's the bad part.. It can get you into a lot of trouble if you are in the middle of an intersection and are actually expecting to go fast and you end up going no where for 1-2 seconds.. I can see someone getting hurt and I can see lawsuits.. I certainly hope they take care of this problem quickly.. --mike |
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03-05-2009, 11:09 AM | #81 |
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With the new software update is the upshifting lag fixed ? And I agree with the DCT - you pay the price for all of its functions, and in this case the lag is causing a problem for quiet a few people. So once again, are any of you experiencing lag while shifting up ? Also is there any problems with the shifting while driving in automatic mode ?
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03-05-2009, 07:32 PM | #83 | |
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C'mon BMWAG it's March, please release that rumored Progman fix!
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03-05-2009, 07:48 PM | #84 |
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Damn, as someone who has been thinking off and on about an M3 with DCT, this is disheartening. Here's the SIB: http://www.bmwtis.com/tsb/bulletins/...p/B280708g.htm
It says the lag doesn't happen in manual mode, but there's a post above (#44) that suggests this happens in manual mode (or is "M manual mode" something different?). What is it?
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03-05-2009, 08:02 PM | #85 |
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Been waiting for a second update before taking my car in, how long is this lag exactly? One second?
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03-05-2009, 08:43 PM | #86 |
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It can vary in length. Sometimes it is as short as a couple tenths of a seconds or so. Sometimes is can be quite a few tenths, maybe even close to 1 s. Seems like often the harder you get on it after the braking to a very slow speed the longer the lag is. It is also much more apparent because the system "gets behind" and they revs, clutches and really jerks.
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03-13-2009, 02:14 PM | #87 | |
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I hope the fix is coming soon for all of us except SenorFunkyPants who seems to be quite satisfied driving aggressively every day.
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03-13-2009, 04:08 PM | #88 |
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I wouldn't say I drive aggressively, simply the way it was designed to be driven which is as an auto-clutch manual, and if driven this way it doesn't lag. Or maybe the USA cars are different because it seems that their owners are the only ones that are complaining about it.
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