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BMW 3-Series (E90 E92) Forum
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Has anyone contacted BMW regarding 29.2 and lag?
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11-19-2008, 04:27 AM | #2817 | |
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MSD80: pre-v29.2 > v31.1.1 > v30.0.2/V29.2 MSD81: first was v29.2, all show same behaviour (much like MSD80 v31.1.1), that is: the software had to be "less restrictive". Thus, I don't think that v31.1.1 will fix anything for you. What's worse, no fix for MSD81 cars will be provided AT ALL. Not in January. Not later. Just read the official statement again: "X6, 135i, and 3 Series/5 Series vehicles from March 2008 production onward are not affected." READ: These cars have no problem and BMW shall provide no fix. There will be no official solution for your car. Got me? If you feel otherwise, you're out of luck with an MSD81 car. I repeat: The BMW announcement includes a fix for MSD80 cars from 09/07 to 03/08, a choice of lag or rattle for pre-09/07 and no fix at all for post 03/08 MSD81 cars (which allegedly are unaffected in BMWs view). Last edited by meyergru; 11-19-2008 at 04:52 AM.. |
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11-19-2008, 05:34 AM | #2818 |
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meyergru,
What do you think was the case with my car? It came with MSD81 V29.2 (confirmed) and was laggy as hell right from the start. After the update to V31 the lag was gone, two weeks after that update the lag came back again.. It gradually started to get more and more laggy.. Very odd, and very dangerous when driving in heavy traffic.. |
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11-19-2008, 05:57 AM | #2819 | |
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Matter-of-fact, Lag was worse with v31.1.1 on my car first and went WAY better when I bent the clips that hold the vacuum lines. So, there could also be problems in the vacuum lines or the pressure transducers that control the wastegate actuators. As to wastegate behaviour changes on MSD81 cars: BMW only says they did not have to deal with bad hardware in MSD81 cars and so they did not have to be as restrictive as with MSD80 cars. Only heaven knows if MSD81 software behaviour did change with progman versions, too. But most of the time, MSD81 owners here either said they didn't feel any lag or only had slight lag. Apart from you, I have not heard of anyone that felt affected as bad as MSD80 v29.2 or v30.x owners. So, maybe, v31.1.1 is better than v29.2 also on MSD81. But I doubt that there will be a full-blown downgrade option as for MSD80 cars. Actually, if it is true that the software is different (which I believe), there never was a pre-29.2 for MSD81! Remember: I don't own an MSD81. What I know for sure is the behaviour on the same MSD80 car with v27.2, v30.0.2 and v31.1.1. And hopefully I will get to know the bevahiour with the Fix(tm). |
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11-19-2008, 08:04 AM | #2820 |
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I discovered the month and day mine was built, 10/23/07, using the hidden menus in iDrive. The plant is stamped on the side driver's door, Regensburg Germany.
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11-19-2008, 08:52 AM | #2821 |
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I have a 10/23/07 335i coupe, bought it in 03/08. In early 04/08, I had a sirius radio put in and I know they had to program the car for the satellite radio, but I am not sure what revision I have. Although I do know that I don't feel strong pull until at least 2500-3000 rpms.
Next week I am going in for my 1st oil change, 14500 miles. Question I have is should I have them update the software with 31.1.?.? as an interim until the January fix comes out? Does 31.1.x.x offer any improvement over 29.2
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11-19-2008, 09:06 AM | #2822 |
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11-19-2008, 09:34 AM | #2824 | |
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11-19-2008, 11:29 AM | #2825 | |||
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Here's a copy of an email I received from a BMW NA rep:
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* First they say LATE January/Early February. Let's play the waiting game again. * Second ... the phrase "this is not considered a defect"... this deserves more investigation. Let's look at the definition of defect: http://www.merriam-webster.com/dictionary/defect http://dictionary.reference.com/browse/defect Quote:
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How's that class action suit going?
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11-19-2008, 12:04 PM | #2826 | |
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11-19-2008, 12:10 PM | #2827 | |
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As far as choise "a", for people like me...I think we have to pick the poison of NO LAG but possible wg rattle, then just fight to have them replace the hardware if/when the rattle starts (hopefully under warranty). OR, just do Mr. 5's fix and be done with it and forget about the rattle. |
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11-19-2008, 12:12 PM | #2828 |
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11-19-2008, 12:15 PM | #2829 |
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To find out what program Version we have 29.2+ or pre 29.2 why doesnt everyone look at there wasgate while there engine is off, and then tell a friend to start the car, if the wastegate rod gets pulled it, that means the wastegate has shut and that you have pre 29.2, if thew wastgate doesnt get pulled in, its 29.2+ Wouldn't this be a valid way to check?
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11-19-2008, 12:25 PM | #2830 | |
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IF this might work (which might take confirmation by a pre 29.2 and a 29.2+ owner both checking out this test, then it would be very cool for us 29.2+'ers to really study how much the rod moves right now, vs how much it moves after the "fix." Personally, I will know isntantly when the car is started, via the exhaust tone. It is night and day pre 29.2 to 29.2+, to my ears. Oh, one factor that MIGHT be a difficulty in this test is "cold start". I can't say for sure that I know what the car does under cold start (pre or post 29.2) to the wastegates. Perhaps (to light the cats ASAP) even pre 29.2 cars pull the rods a bit to let more gasses through until the engine warms a bit in a few seconds. Just thinking out loud... Anyone have other thoughts on the suggested rod movement check test? |
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11-19-2008, 12:50 PM | #2831 | |
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Anyways, while the car is off, you can see the wastegate rod, there is a wear mark on the rod from it moving in and out of the Actuator. Once the car started the ROD moved inside of the actuator and pulled on the wastegate arm, which in effect closed the wastegate shut. ( pre 29.2 i never got updated)
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11-19-2008, 01:05 PM | #2832 | |||
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They know what ackowledgement of a defect would imply: 1. Monetary compensation for customers that have been impaired by this problem for MONTHS - what's more, in cases of build dates 09/07 to 03/08: completely unneccessarily. 2. Rightful claim to a repair of the flawed parts. They'll do it neither in advance nor if the rattle occurs within the warranty period, since "customers should understand" these are just "concerns". BMW wanted to eliminate the rattles - by software - but you chose otherwise. Read the official statement again very thoroughly and you'll know what I mean. I deem the impreciseness purely intentional. What they do not say - but we know: 1. The wastegates of pre 09/07 cars are flawed. 2. We did a software fix which we thought customers would not notice ("may be perceptible to the most sensitive drivers") - even for cars that were not affected. 3. If you have flawed wastegates, you can choose to get the same corrected software but may experience rattle (aka "possibility of slightly increased engine noise unde certain circumstances"). I don't think that BMW refers to the noise to the louder exhaust note they introduced with open wastegates. That would actually get softer again with the update. Also, that is independent of the wastegate hardware. They have to mean rattle. |
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11-19-2008, 01:45 PM | #2833 |
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I am still very confused with which software my car has. My build date is 01/08 and I asked my dealer if they ever update the software while the car is still on the lot and he told me no. So I was thinking I didn't have the 29.2 software. Now by the notice coming out from BMW they are saying that 07's thru 08's are effected by it? How do I know if I have the 29.2 version or not? My car is an AT.
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11-19-2008, 02:09 PM | #2834 |
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It isn't the actually wastegates that are flawed, it is the actuators and the ROD which do not close the wastegate and begin to stop working 100%, which causes the wastegate to stay a little bit open and not completely shut, which makes the ticking sound.
BMW FIX: keep wastegate open during idle, instead of closed.
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11-19-2008, 02:10 PM | #2835 |
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Read my above posts, who would like to compare there wastegate rod, during car being off and car during idle? Maybe we can get on to something
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11-19-2008, 02:28 PM | #2836 | |
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335XI, March 07, no software updates. 50,000 km (31,000 miles). Stone cold (below freezing, not started today), about 1" of "wear" showing on the rod. Start engine - no wear showing at all, so I imagine at least 1" of "pull". Wait for rpm to die down to 600-700 rpm - still no wear marks showing. |
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11-19-2008, 02:52 PM | #2837 | |
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11-19-2008, 02:53 PM | #2838 |
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I'll add to the mix
1/08 production, no updates, 16k miles About 1" wear on rod off and gone at start. After warm up still no wear showing.
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