M-DCT Lag issue. Owners please post your car info here

[frankzlin79]

Just got back from the dealership two days ago. My paper work states: "PROGRAMMED AND CODED COMPLETE VEHICLE AS PER SIB 28 07 08." I noticed a significant improvement on the lag. The lag is now about 0.5 - 1.0 sec. Before the update, I had about a 1.0-2.0 sec lag.

[swamp2]

Originally Posted by Radiation Joe

By the way, I got the "Check Engine Soon", "Increased Emissions" lights last night along with some minor rough running. They didn't clear with a restart, and now the lights are on constant.

Could this be the idle circuit problem that contributes to the lag problem? I thought the '09s weren't susceptible to this.

Sounds like all of the tell tale signs to me. I thought for sure you had already seen it but the best discussion of this issue is here.

[swamp2]

Ugh. I now have an air conditioner lag. Seem related to my recent software update. I posted in a topic that seemed to be most related but I think it is also related to the latest DCT software update. Link here. Ugh...

[footie]

Originally Posted by swamp2

Yeah, the M3 is a pretty terrible car...

Yeah, plain awful. The worst car I have ever owned. Please add (j/k) here

But I do wish I had stayed put with my S5 instead of jumping ship to my heart's desire which the M3 was. It was faster, more focused and was available. I suppose part ......... no all of my regret is centering on BMW's lack of fixing the gearbox issues, probably if the gearbox had performed as expected I would still be in love with the M3 but as most of my driving is done in traffic and at speeds which show off the lag in all it's glory I have gone pass the point where it was simply annoying.

[mkoesel]

Sorry to hear of your woes footie. Do you use S modes? If not, I'd consider that until the issue is fixed.

I would still never consider an S5 instead of the M3. Perhaps an RS5? I think they finally plan to put DSG in that one right? In my case, I'd probalby miss the hard top (A/S/RS5 has a soft-top as you know, which some will consider an advantage), and I still have no desire for AWD, even rear biased AWD. And that's still a year off. Until then at least, the M3, despite the continued DCT lag issue, is the best all-around car out there.

[alito]

Originally Posted by frankzlin79

Just got back from the dealership two days ago. My paper work states: "PROGRAMMED AND CODED COMPLETE VEHICLE AS PER SIB 28 07 08." I noticed a significant improvement on the lag. The lag is now about 0.5 - 1.0 sec. Before the update, I had about a 1.0-2.0 sec lag.

Is that SIB specifically for the lag or something else?
Thanks

[frankzlin79]

Originally Posted by alito

Is that SIB specifically for the lag or something else?
Thanks

The SIB is specifically for the lag. Do a search for that SIB number and you can find a PDF of the actual bulletin. The SIB says it applies under hard braking situation, but the reality from people who recieved the update, is that it also helps in the "rolling stop" type of lag.

[GT3 Tim]

Got the car back yesterday after the software update.

Lag is nearly gone. The only time I noticed it was when the car was obviously between gears (downshift). The car now functions "as I would expect it to". I expect a bit of lag if the tranny is changing gears, etc., and that seems to be the case. I am a happy camper now.

Also had the idle control valve hose checked for delamination. It was fine.

The ISTA/P version was not on the invoice. However, it does state:

Old Integration level E89-08-09-530
New Integration Level E089-09-03-510 (there is an extra zero...but that is what the invoice states).

According to the Chart "Programming Data vs. Vehicle Data Status" (from another post), I got ISTA/P version 2.33.0. Old version would have been Progman 31.2, 32.0, or 32.1. (all had the same integration level number).

So, it looks like ISTA/P Version 2.33.0 definately greatly reduced the lag for me. I will report back if it starts to happen again, etc.

[zenderm3]

Sounds good Tim - keen to hear the latest and greatest about M-DCt

[footie]

Originally Posted by GT3 Tim

Got the car back yesterday after the software update.

Lag is nearly gone. The only time I noticed it was when the car was obviously between gears (downshift). The car now functions "as I would expect it to". I expect a bit of lag if the tranny is changing gears, etc., and that seems to be the case. I am a happy camper now.

Also had the idle control valve hose checked for delamination. It was fine.

The ISTA/P version was not on the invoice. However, it does state:

Old Integration level E89-08-09-530
New Integration Level E089-09-03-510 (there is an extra zero...but that is what the invoice states).

According to the Chart "Programming Data vs. Vehicle Data Status" (from another post), I got ISTA/P version 2.33.0. Old version would have been Progman 31.2, 32.0, or 32.1. (all had the same integration level number).

So, it looks like ISTA/P Version 2.33.0 definately greatly reduced the lag for me. I will report back if it starts to happen again, etc.

Tim,

Keep us posted to see if the gearbox continues to behave like this, because I was in your very shoes some months ago singing the praises of the last software upgrade only to find the car reverting back to it's old ways.

[Bluesummer]

car is going in today for the reflash, will report back when I pick it up this weekend

[zenderm3]

Blue - see if you can get them to give you the version of the reflash.

Cheers.

[riyatch]

went in for the update and my SA called me a little bit ago and told me it didnt happen because their computers crash. he said they have to reboot and they would try again tomorrow. didnt want to leave my car there overnight so i went to go pick it up and got home to find a 3 inch scratch on my passenger front window tint, the car smelling of gasoline and my gas down 1/8 of a tank. i dont know what they hell they did with my car but each time i go in for service it always stresses me out. Wish i had more dealers. Going to go back next week or maybe wait until september to see if another update is coming.

[Bluesummer]

Originally Posted by zenderm3

Blue - see if you can get them to give you the version of the reflash.

Cheers.

I will try, wish me lock

[Bluesummer]

Originally Posted by riyatch

went in for the update and my SA called me a little bit ago and told me it didnt happen because their computers crash. he said they have to reboot and they would try again tomorrow. didnt want to leave my car there overnight so i went to go pick it up and got home to find a 3 inch scratch on my passenger front window tint, the car smelling of gasoline and my gas down 1/8 of a tank. i dont know what they hell they did with my car but each time i go in for service it always stresses me out. Wish i had more dealers. Going to go back next week or maybe wait until september to see if another update is coming.

i feel your pain. I have no problem with my dealership so far and they are <8 miles away from me. So I really have no complain about their work and the service they provide which is excellent as well. A bit of a turn down today was when I got handed a key to my loaner, it turned out to be a 08' 328 while my gf with a 335 got a 09' 328 with ZPP last week. I thought M cars owners would've gotten better loaners but sadly not. Well, now the wait begins.

[jerseykid]

Originally Posted by erio

Yes, I agree with the feeling of "sluggish" low rpm acceleration...it feels as though they screwed with the torque curve with now less torque below the 3-4000 rpm range than before. This is of course, all subjective. In D modes it also seems to be shifting at higher rpms, especially in 2-4 gears. Anyone agree? I believe mine is a 7/08 build.

I'm experiencing the same thing. Got my car back today and the lag has diminished considerably. But soon after I drove off the lot and started doing some hard accelerations I noticed something odd. Its apparent to me that the car feels "sluggish". Feels like it has less torque and as if its less eager to blast through the rpms. Oh man this is not good, I would have rather stuck with the lag then suffer from a performance downgrade!!

Serious question: Can I go back to my previous version?? I want to go back, please. I can't live like this thinking my car is slower now.

[grayshrk]

Originally Posted by jerseykid

I'm experiencing the same thing. Got my car back today and the lag has diminished considerably. But soon after I drove off the lot and started doing some hard accelerations I noticed something odd. Its apparent to me that the car feels "sluggish". Feels like it has less torque and as if its less eager to blast through the rpms. Oh man this is not good, I would have rather stuck with the lag then suffer from a performance downgrade!!

Serious question: Can I go back to my previous version?? I want to go back, please. I can't live like this thinking my car is slower now.

I gotta say guys, ever since this idea of "sluggishness" first popped up, I've been trying hard to see if I can identify any new "sluggishness". For me, I don't see any new sluggishness. I tracked my car prior to the update and have a pretty good feel for what it can do when pushed hard. I don't see anything different post update. Maybe if someone gets a dyno done post update we could compare torque curves to see if anything significant changed across the entire RPM spectrum.

[swamp2]

Originally Posted by grayshrk

I gotta say guys, ever since this idea of "sluggishness" first popped up, I've been trying hard to see if I can identify any new "sluggishness". For me, I don't see any new sluggishness. I tracked my car prior to the update and have a pretty good feel for what it can do when pushed hard. I don't see anything different post update. Maybe if someone gets a dyno done post update we could compare torque curves to see if anything significant changed across the entire RPM spectrum.

I've tried to pay attention to this as well. I do not feel any difference whatsoever. However, if there is an effect here you would almost for sure not see it by dyno testing. That only gives you WOT torque vs. rpm. Here we are considering part throttle issues - throttle mapping and throttle sensitivity. To those experiencing the problem you might consider trying sport or sport plus for the the throttle, it should very much counteract this effect, increasing low throttle sensitivity. This might be a perfectly good work around.

[erio]

Originally Posted by swamp2

I've tried to pay attention to this as well. I do not feel any difference whatsoever. However, if there is an effect here you would almost for sure not see it by dyno testing. That only gives you WOT torque vs. rpm. Here we are considering part throttle issues - throttle mapping and throttle sensitivity. To those experiencing the problem you might consider trying sport or sport plus for the the throttle, it should very much counteract this effect, increasing low throttle sensitivity. This might be a perfectly good work around.

Thanks for the advice. I have always used sport plus and this is the mode where I noticed the difference initially. I still need to do some more testing to see if this is really an isssue for me, at least.

[footie]

Originally Posted by swamp2

I've tried to pay attention to this as well. I do not feel any difference whatsoever. However, if there is an effect here you would almost for sure not see it by dyno testing. That only gives you WOT torque vs. rpm. Here we are considering part throttle issues - throttle mapping and throttle sensitivity. To those experiencing the problem you might consider trying sport or sport plus for the the throttle, it should very much counteract this effect, increasing low throttle sensitivity. This might be a perfectly good work around.

This is surprising to me as I too noticed something similar on my last update which was months ago, this impression lasted only for about 2~3 days and either went away or I just adjusted my driving style to suit.

There is no doubt that there is subtle differences between each upgrade but it will be interesting to see if anyone else reckon this sluggishness goes away.

[AZ-BMW]

Originally Posted by alito

Is that SIB specifically for the lag or something else?
Thanks

Alito: FYI, Attached is the referenced SIB regarding DCT delayed throttle response (aka, lag/hesitation)

[swamp2]

Originally Posted by AZ-BMW

Alito: FYI, Attached is the referenced SIB regarding DCT delayed throttle response (aka, lag/hesitation)

Repost. We talked about this extensively some time ago. The whole point was that BMW changed their story from saying lag is normal and don't update software to saying well it is still normal but do update the software.