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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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07-09-2008, 02:03 AM | #287 | |
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But right now, BMW has issued a warning (actually it's two separate warnings) about injectors and DME software: http://babelfish.yahoo.com/translate...C3%9Cbersetzen This is not a recall, but an update will be done to affected cars (this source says 35.000 worldwide) on regular stopovers or if problems should arise. Other sources, like Autobild (http://www.autobild.de/artikel/motor...mw_730901.html), speak of 55.000 cars worldwide. Most sources say that only new DIs are the culprit (http://www.auto-motor-und-sport.de/n...3640_13987.hbs), at least the injectors in the 335i are a different type than all other 3 series. My car is not affected by any of these two problems, despite being produced in the 3/07 to 1/08 range. You can translate the german pages with http://babelfish.yahoo.com Last edited by meyergru; 07-09-2008 at 07:47 AM.. |
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07-09-2008, 09:58 PM | #288 |
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Here's another data point for those who are watching...
I did a European delivery of a 2008 335i w/ manual in May where we drove the car 3100 miles over 25 days. Car was built mid-April and just took redelivery yesterday. Noticed three changes in behavior... First, there is lag now, reminds me of an automatic kickdown delay. Before, in Europe, I could be doing 30-40 mph in third gear from sea level to 7000 feet, it didn't matter and the throttle response was instant and forceful. Now not so much. Second, I had to be careful because coming from an E46 sedan, the extra power took some getting used to. In Europe, doing a rolling start but then flooring the gas would cause the rear tires to break loose in first. No dumping of the clutch involved. Now, nothing. DSC light never blinks and there's not even a little tire spin. Third, and this one contradicts what some others have been saying. The exhaust note in Europe was louder. More raw, rough...I loved it. I couldn't believe BMW would put that kind of sound in a regular 3 series but I was happy they did. To use a car rag cliche, there was a "hint of Italian operatics" from 4-7K RPMs though not a burble or pop sound as others have reported in lower gears. Now it sounds more typical, more subdued but definitely quieter. Compared to what I had, I hate it. I'll see what the dealer has to say about this tomorrow. Last edited by mmike70; 07-09-2008 at 10:18 PM.. Reason: added more info |
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07-09-2008, 11:41 PM | #289 | |
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07-10-2008, 12:02 AM | #290 |
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So are they updating your cars before they hitch a ride across the pond? Updating the progman with no reason is uncool.
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2008 E90 335i.| Montego | Black Leather| Aluminum Trim | Premium | Sports Package with 18's | Sirius Sat Radio | Comfort Access | Rear fold down seats | Ordered on May 05, 2008. | Born on May 15, 2008 / Delivered July 23, 2008
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07-10-2008, 12:08 AM | #291 | ||
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I posted this in another thread but here it is again for those who may not have seen it. Quote:
The one thing I do notice the most about the V30.0 software is that the exhaust is louder, mostly at idle and when pulling away from stop signs, etc. I understand there's a solenoid that opens and closes a flap in the exhaust and I suspect it stays open a bit more of the time now with the new software. Whether or not this was intentional or simply an "oops" on the part of BMW's engine control firmware group...who knows. I haven't seen any difference in fuel economy. It doesn't suddenly suck. I did a quick experiment this past weekend: Cruise control set at 73mph indicated, flat ground, no a/c, driven over 50 miles = 32.2 MPG on the computer display. |
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07-10-2008, 12:27 AM | #292 |
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They update them at the VPC upon arrival. Probably not just ED cars, but all new cars hitting the port.
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07-10-2008, 03:46 AM | #293 | |
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For example, acustic signaling of door locking was not allowed, winker and brake lights had to be separate and who knows what else (maybe even DME changes in order to meet emission requirements). I'd ask my dealer if they could skip the DME update. Alas, since it is done in the VPC already, he may not be able to influence that. |
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07-10-2008, 06:09 AM | #294 | |
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The best way I think I can explain the overall behavior to the dealer is in Europe, the car felt like it had a V8 while now it feels like what it is, a regular turbo 6. |
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07-10-2008, 09:32 AM | #295 | |
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This really sucks, I can't believe they would take that away. Also, I don't think I can stop the VPC from doing the progman update. Let me see if I can find that thread where the guy had his computer upgraded at the VPC upon redelivery. Edit: here's that link: http://www.bimmerfest.com/forums/sho...d.php?t=283503
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07-10-2008, 09:38 AM | #296 | ||
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I posted this about two weeks ago
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07-10-2008, 09:41 AM | #297 |
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I totally forgot about that. Any updates?
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07-10-2008, 11:10 AM | #298 |
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I missed this too...all the other posts I read talked about how the 29.2 flash made their car louder but this at least means that I wasn't just imagining the change in noise.
It sounds like the sales manager is on your side. To have someone at the dealership admit there may be a problem is half the battle. |
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07-10-2008, 12:58 PM | #299 |
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No real update from me, but I wanted to comment on the noise.
I've pretty much narrowed down my supa-loud exhaust to first gear only. After a cold start, the valve stays closed for about 15 seconds. Then it opens FULLY at the SLIGHTEST, and I mean like 5% throttle, ONLY in first gear. Very odd huh?! What this means is that driving ina parking garage makes it sound like I have some kind of full race catless exhaust - VRRRRRRROOOOM - pop pop popoppopop - and all I'm trying to do is find a parking spot. lol. A shift into second and no more loud drone or popping on throttle lift. Also in first gear, as I've said, I get a VERY loud flap-closing clanking/clicking metal noise when I touch and release the throttle. This part of the noise sounds very cheap and makes the car sound broken. |
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07-12-2008, 11:18 AM | #300 |
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I deffinitely noted the change in exhaust note - much more subdued and the car does feel different then when I picked it up in April 08 on ED. There does seem to be more lag and softer throttle response as well. I should give BMWNA a call and add to the list...
This is my first BMW and little things like this taint the experience a little Maybe the change in exhaust note it to help marketing sell more of the new BMW Performance Exhaust System now listed as an E92 accessory "BMW Performance Exhaust System $1,862 An engine that exhales easier is an engine that will run smoothly, rev higher, accelerate faster-but that's not all. As the RPMs escalate, so does the exhaust note, creating a racy but never intrusive sound. Now drivers can not only feel the enhanced performance, but hear it with every shift and acceleration." Gee - kind of sounds like what my car sounded like while driving in Europe |
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07-12-2008, 02:44 PM | #302 |
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just get some 1/8" tubing (very short bit) and a check valve like a uspplastic kynar check valve in 3/16" and turn off that silly exhaust flap. takes about 2 seconds to install/remove when the exhaust is hot. i seriously doubt the flap has any backpressure benefits since the turbo(s) are more restrictive than any part of the exhaust tract. if the really wanted a nice symetric implementation they would have spent $20 more and modulated two wastegates for both exhaust sides. However from an engineering standpoint having a single point of failure to shut the engine motor down if both wastegate (muffler) shutdown completely would be like sticking a banana in the tailpipe (being a kid lol) so implementing one allows for failure in one without massively affecting run condition.
It would be fun to speak (german?) to a bmw engineer to get their philosophy and input. They do indeed watch us here but it would be a great thing for the car manufacturers to speak back to us. Microsoft lets their DEV employees blog and chat and forum with end users. It is really disappointing that car manufacturers can not play a more active role. While the forum rules may exclude the manufacturers by agreement; it doesn't stop them from reading. So why not invite them to participate straight up. Trust me you are in denial if you think BMW isn't reading this thread, and i'm sure BMW knows exactly what they did in 29.2(30) from 28 to address whatever it might be they needed to do. It is probably NDA and trade secret and general operation of their company that prohibits the direct contact of the engineers or even bmw liasons. which is a shame.
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07-12-2008, 02:54 PM | #303 | |
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07-12-2008, 04:27 PM | #304 |
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I've been holding off as long as I can to take my car in because of this. I'm even worried about an oil change. I threatened my SA that if they did the update on my car, I'd make a HUGE scene and would never buy a BMW from them again.
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07-12-2008, 04:33 PM | #305 |
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Unless I'm missing something this won't bring the same sound back. To clip from another poster about this mod:
as for the effect, i hear it and the difference is quite noticeable especially during cold starts and the rev range up to 2500 rpm. There is a slight drone to the car when cruising around 2000rpm, but not annoying. obviously, after 2500 the flaps open anyway and the exhaust sounds the same as before. well worth doing it The sound I'm talking about is different/meaner/throatier/more growling while cold/warm at idle/WOT/any rpm/any speed. Also this mod came out and made a difference before progman 29.2. The only way I can see this working is if the flap is somehow staying closed all the time now. |
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07-13-2008, 11:49 PM | #306 |
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So what did he say? Would they do the update against your wishes?
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07-15-2008, 03:48 AM | #307 |
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any news on 29.2 update? one thing i noticed few days ago, the car is almost as responsive as pre-29.2 when the engine temp is very low - ie. around 160~200F... the first 10 minutes or so after i start the car... but then as soon as the temp reaches the normal temp range - 230~250F, the car is as lethargic as hyundai sonara...
so i know that it's the ECU that contributes this behavior... as i've said before, if you are seriusly considering 335i/ix, i would wait until BMW fixes this 29.2 problem or else... go buy M3 or nissan... |
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07-15-2008, 08:12 AM | #308 | |
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