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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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10-15-2008, 10:19 AM | #2267 |
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10-15-2008, 10:31 AM | #2268 |
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10-15-2008, 10:39 AM | #2269 | |
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10-15-2008, 10:47 AM | #2270 | |
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10-15-2008, 12:08 PM | #2271 | |
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Anyway, I think the "lag" in general fluctutes between a seemingly concrete 2 second delay, and a "slow build up" that just leaves the car feeling anemic with a slow ramp-up to normal. I can't explain why it is sometimes one way and sometimes the other. Just this morning I was in third gear, doing about 40 mph and needed to change lanes quickly and accelerate fast to avoid angering cars approaching from the rear. Well, I forgot to drive it like a Civic SI and didn't downshift. I nearly got crushed off the road waiting...waiting...waiting for the car to go anywhere after I floored it in third gear around 2000 rpm. PITIFUL. Sometimes, as a combination of getting sick and tired of fighting BMW about this and possibly getting "used to" the lag, I almost say..."eh, maybe it's not that big of a deal." Then something REAL WORLD happens like either the Smart Car p0wnage that I got two weekends ago, or this dangerous situation of a lane change/acceleration occurance (which has happened to me numerous times in traffic now) and all of the sudden I'm fired up to 110% angry again. The fight shall continue. |
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10-15-2008, 12:23 PM | #2272 | |
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10-15-2008, 12:28 PM | #2273 | |
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I seem to experience the same frustrations as you - some days the car is mostly on point, while other days it's pathetic. Even when it's mostly on point, the lag is still there and discernible. Then again, perhaps I've adapted to it's lag and I'm driving at higher RPMs to combat it's effects... it's easier to hear the rather nice exhaust note that way. Can't do that in stop-n-go traffic where the lag is especially dangerous. So yes - the fight continues. I really want to like my car completely...
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Last edited by shaddai; 10-15-2008 at 05:34 PM.. |
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10-15-2008, 12:45 PM | #2274 |
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I don't believe they did update it and not tell me. I know on the UK forum there is mention of 31.1 fixing or at least reducing lag. My feeling at the moment is that the build-up in boost is much more linear than it was, I've not felt this before - the ca ronly has 1,000 miles on it. To fair it has never been bad enough for me to be embarassed by a much lesser car. I'm now wondering is they reset my throttle adaptation and that when people think 31.1 has reduced lag in fact all that's happened is that with the 31.1 upgrade process you get a reset adaptation. Also could be that the adaptation parameters have changed and this is the only real change?
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10-15-2008, 01:07 PM | #2275 | |
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...and BMW cheered. Don't 'get used to it'
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10-15-2008, 01:14 PM | #2276 | ||
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interesting posts from a UK member that seems to be "in the know":
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10-15-2008, 01:14 PM | #2277 |
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...and on top of it all there was the mystery of Pavel's car going from Win to Fail magically one day, after his update. Argh!
We also have to remember that Meyergru's car is being given an autopsy by the main guys in Germany, as we speak. That is our main ray of light at this point. It will be very interesting to see the outcome of all of those shenanigans in the next week or three. Maybe the following conversation will take place after they put all progmans on his car one after the other and test it out: Hanz: Wow, this car licks donkey balls after we put this 29.2 version on, replacing version 27.4 Franz: Yes, you are correct, it drives like a Civic SI and sounds like a lawn mower now! Hanz: What could have caused this? Franz: Well, the wastegates are hanging wide open at idle and cruise now, I bet that's it. Hanz: GENIUS! Last edited by ezatnova; 10-15-2008 at 01:30 PM.. |
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10-15-2008, 02:26 PM | #2278 |
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Not sure if this one has already been posted so hereby:
http://www.autoblog.com/2008/08/22/b...s-performance/ |
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10-15-2008, 02:37 PM | #2279 | |
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I forget who it was on here who heard back some form of aknowledgement from Roundel about 1-2 weeks ago. Have we heard anything more? |
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10-15-2008, 03:08 PM | #2280 | |
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I loved being able to quickly shift lanes pre virus 29.2 ... all that power and responsiveness at low RPM was reason #1 I got the car in the first place. |
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10-15-2008, 03:10 PM | #2281 |
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that is very promising, no?
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10-15-2008, 03:42 PM | #2282 |
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Not until he chimes in with more info as to why he feels there could be improvement for us (especially US customers) when we are being told be reliable sources that there is no DME update involved for 31.x, so it is impossible for it to address the lag. If BMW wouldn't have fisted Clive in his nether regions, we'd know more today/tomorrow...but thanks to those asshats..now we have to still speculate.
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10-15-2008, 05:24 PM | #2284 |
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dinan and procede will very shortly (in the 3.1 final)
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10-15-2008, 05:28 PM | #2285 |
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Really that post is a brief summation of what we already know except the part that says 31.1 cures the 'lag' issue that BMW claims doesn't exist.
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10-16-2008, 02:07 AM | #2286 | |
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10-16-2008, 09:19 AM | #2287 |
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Not that I want this thread to go down the OT road of tunes, but what was said a couple of posts back is essentially correct. I'd say Dinan CURES the lag, because the code is 27.4 code. There is no 29.2 business to mess anything up. Procede 3.1 is COUNTERING the lag, via fooling the ecu into altering the wg duty cycles. Obviously the flash (Dinan) is the purest and best way to "fix" the lag, but hopefully the Procede will help some people out too. Now, if we would ever see Shark Edit/Injector from Jim C, then there would be another option for a "pure" flash fix.
Last thing I'll add... the other big player right now, Terry's JB3, chooses to not alter the wg duty cycles at this time, due to Terry (BMS) believing that if the BMW engineers backed off on the duty cycles, they had good reason to do so, and he chooses not to counter that. Personally I say the hell that, and Terry should get in the business of offering a lag-fix version of the JB3. But...that's just me. Bottom line is, if any tune is "fixing" or "curing" the lag, then the original issue of the wg rattle could/will return, which is what BMW was so poorly attempting to cure in the first place. Again, I say to hell with BMW and their engineers until they come up with a REAL fix that would stop the rattle in a PROPER way, i.e. hardware replacement, allowing the car to run PROPER wg duty cycles again. |
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10-16-2008, 09:38 AM | #2288 |
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I have not posted in a while but I just wanted to drop in and vent to say I hate my f'ing car and want to wrap it around a tree every time I think of how much money I am wasting. I threw it to the floor this morning as I needed to go around a garbage truck on a single lane road. Well there was another car coming and I had plenty of room. I should know better that my 50k twin turbo pussy "excels" in situations that require immediate response since my car is running withing spec. When I punched the gas I think I actually went backwards. The oncoming car locked up their brakes and it was not a good scene. I hope and pray for all evil and bad things to happen to the BMW engineers and management team that control this situation.
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