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Has anyone contacted BMW regarding 29.2 and lag?
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11-14-2008, 10:24 AM | #2729 |
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Thanks for the translation! The timing stacks up with hints of promises for something special in V32. For me personally with a July 08 build it sounds like I should have good turbos but need better s/w than 30.0.2
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11-14-2008, 10:33 AM | #2730 |
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my car also built on 2008 03 so i have MSD81
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11-14-2008, 11:02 AM | #2731 | |
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Pre 9/07 builds: MSD80 and older turbos/wastegates. 9/07 - 3/08 builds: MSD80 and newer turbos/wastegates. 3/08 and later builds: MSD81 and newer turbos/wastegates. The change to MSD81 is not set in stone in terms of when it happened in March, so if you are a 3/08 build you have to manually check the ECU to find out.
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11-14-2008, 11:12 AM | #2732 | |
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11-14-2008, 11:22 AM | #2733 | |
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BTW: Although there are 4 part numbers for turbos in the ETK, there are actually only two types of turbos that were used - the other two ETK numbers are for right hand drive cars - yes, the turbos are different for those. MSD81 cars apparently never had any software-related problem since - according to BMW - there was never a software fix for the rattle. So maybe we owe an excuse to MSD81 owners stating they have no lag. Although the measurement still says that full boost is achieved only after 1700 RPM (this is not in the article!). MSD80 owners can get a downgrade in a short while. But cars built before 09/07 face the risk of wastegate rattling if they are downgraded. On MSD80/81 differentiation: You can also look it up in the ETK by your VIN number if the ETK is young enough. |
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11-14-2008, 11:27 AM | #2734 | |
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11-14-2008, 11:28 AM | #2735 |
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It's hard to hold out hope if BMW thinks that the MSD81 cars don't have the problem.
Mine is a 2006 build. Old turbos/wastegates vs new turbos/wastegates. I've been keeping up with this thread but what exactly was changed with the wastegates and turbos? -B |
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11-14-2008, 11:28 AM | #2736 | |
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11-14-2008, 11:44 AM | #2737 | ||
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Shiv's posting here seems to second BMW's claim. Although he also says: "Maybe not as responsive but very close.". Quote:
There are part numbers of the wastegate actuator replacements in the SIB that are not available separately in the ETK. The ETK only holds part numbers for the turbos including actuators. I don't really know if there has been changed something in the turbos themselves as well. That would make a difference only in terms of material cost, work is expensive anyhow. Here is a nice explanation of the problem. In order to cut cost, BMW first tried to solve that problem by a software fix (first in v29.2), keeping the wastegates open during idle, thus causing lag. |
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11-14-2008, 02:36 PM | #2738 |
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So lemme get this straight. Not having the car yet but wanting it, I kinda want to check the build date and confirm this when I get it.
If you have an MSD80/old turbos car, replace the turbos AND get the new software? If you have an MSD80/new turbos car, then just get the software upgrade? If you have an MSD81/new turbos car, then just get the software upgrade? I wanna make sure, cause I want to have it in writing that I get new turbo's or something should the rattle come back or what have you for when I get the car. |
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11-14-2008, 03:35 PM | #2739 | |||
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Quote:
Quote:
Quote:
You see: It's not so easy... |
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11-14-2008, 04:12 PM | #2740 |
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I'll have to try to comprehend this info later - looks juicy!
Meanwhile, it's no wonder our shop foremans can't feel the lag, they don't even know that our cars have two identically sized turbos! Both foremen peoples and the service advisor I saw today thought the car had one small and one big turbo. I shouldn't know more than them! |
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11-14-2008, 04:29 PM | #2741 | |
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find somebody else, if you can! |
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11-14-2008, 05:02 PM | #2742 |
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Sounds like you guys have finally gotten to the bottom of this. I've been lurking since around page 10 and this, if legitimate, is the most progress I've seen to date. Thanks to everyone who has been so persistent on this issue.
I have a 09/07 build and can't wait for the fix. |
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11-14-2008, 05:48 PM | #2743 | |
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11-14-2008, 08:25 PM | #2744 |
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Interesting to say the least. I have an 4/08 build and it came with v29.2 hence I should have MSD81. Im curious why I would have MSD81 (post 3/08 build) but diddnt come with v30.1. ( I got the new software after a HPFP was replaced) Must have been a grey area in time until the new software for HPFP was out. Now let me recap...I have an 4/08 build with MSD81, I also have the newer wasegates and turbos, but, v32 will do nothing for me cuz my software is up-to-date and I have new turbos and wastegates. BUT I STILL HAVE THE FU@#*IKNG LAG THAT THE CAR I TEST DROVE DID NOT!!!!!!
I want a Mercedes Benz.
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11-14-2008, 10:41 PM | #2745 |
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That would be an apology not an excuse. And yes... you do. Apology accepted.
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11-14-2008, 10:42 PM | #2746 | |
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Reading the "how the engine works" document in the sticky section of this forum really opened my eyes as to how incredibly complicated this N54 engine is. There's a section describing engine temperature levels and the associated power or economy of the temperature levels. As for the earlier tidbits about MSD81 stuff, I know this - I have a 4/08 build with 30.0.2 (unsure of what it was delivered with, but most likely 29.2) and I experience The Lag. If BMW says I don't have it, well... that's great. Thanks.
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11-15-2008, 04:26 AM | #2747 | |
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When I read shaddai's and RBBMWE46M3's last postings, I am not so sure about that. I repeat: Despite BMW saying that MSD81 software never had the wastegate rattle fix, I really doubt that those cars were completely like the MSD80 with pre-v29.2. Very close, but not completely. |
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11-15-2008, 05:17 AM | #2748 | |
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As I drive my car more I find I'm using over 3,000 revs more often because there's more happening up there. My gut feel is that 80% of the torque is present 2000 to 3000 rpm.
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11-15-2008, 05:59 AM | #2749 |
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To RBBMWE46M3 (your post #2748)
My car is 05/08 and my HPFP was replaced just 1 week after taking delivery, approx. 400 miles. My software is E89X-08-03-530 acc. to my dealer. When I discussed my problem with “Autobild” for their artikel I was told according to talks between BMW and “Autobild” that some US Models could have been delivered with the MSD80 instead of MSD81 (They cleaned up their shelves !!). BMW wants to contact me within the next 2 weeks to solve (?) my problem, they will check to find out what MSD was put in my car. |
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11-15-2008, 07:16 AM | #2750 | |
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How can I tell what MSD is really in my car? vin? lift ecu cover? You would think after reading every friggin post in here at least twice I should know, less asking my phsysciactric service department what version I have...
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