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06-18-2008, 05:11 PM | #68 | |
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I just want to point out that with BMW detuning the car so that there is now noticeable lag - BMW should rethink the N54 and the 135 altogether - their our other options out there and why weren't they explored? Was it a cost saving exercise to have 1 engines into 2 cars? Maybe BMW should re think the parts they're having problems with - detuning a car just sucks! |
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06-18-2008, 05:42 PM | #69 | |
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It's a wastegate spooling issue. The hesitation issue while spooling. |
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06-18-2008, 08:17 PM | #70 |
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It absolutely is losing horsepower/torque. Just because the peak numbers are the same, doesn't mean that at 1k rpm there isn't less power. It can't possibly be slower and have no loss of power.
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06-18-2008, 08:20 PM | #71 | |
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Lag is a function of time. |
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06-18-2008, 09:42 PM | #72 |
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any 135s with program 30.xxxx?
I am wondering if this solves any issues... E90 has some say yes, some say no
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06-18-2008, 10:15 PM | #73 |
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ok, i just read EVERYTHING that there was to say on e90, and from what I got, there's no such thing as v30, it was a misconception, and someone complained to BMW enough so that they did something, and he says his lag is all gone now...so there's hope, there's always hope.
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06-18-2008, 10:18 PM | #74 |
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I see a trend here, the people who have their 135's are the ones saying they have no problems. The people who don't have a 135 (yet) are concerned about a problem that some other person says they have?? My car performs flawlessly and I can feel the full torque come in at 1300-1400 if I floor it when the revs are just above idle. Due to the nature of turbos the has to be lag even if it is 1/10 of a second, If you drive at 10% throttle the turbos are in a low pressure state, you floor it 100% the injectors have to spray more fuel, more gas produced, turbos increase pressure, force more air, all this takes a few cycles of the engine, hence the lag. In a normally aspirated car the instant the injectors spray at 100% then you are at full power for that RPM point. The other consideration is the VANOS system, the changing of the valve timing takes a few moments also. The 128i has valvetronic the 135 has what the older BMW 6's had and having had a 325 (2000 model) it had some lag before power built as the VANOS system changed from economy to power settings.
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06-18-2008, 10:34 PM | #75 |
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Maybe this so called lag people are experiencing is only in Manual models. I have Steptronic and the car feels like a N/A car. The power is always ready and I have yet to be disappointed as long im using DS mode or the paddles.
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06-18-2008, 11:58 PM | #77 |
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Does anyone know at what point BMW started installing version 29.2 in the cars? Mine was finished the first of May (still don't have it damnit!!) and was wondering if my car will be affected. On the other hand, I am wondering if this is something I should get my panties in a wad about or if a select few are creating mass hysteria in everyone else where it is not really warranted.
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06-19-2008, 12:02 AM | #78 |
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i'm tired of the 29.2 slow start on 1st and 2nd gear, how can i ask my SA to refresh the SW for free if there is new version out?:iono:
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06-19-2008, 03:41 AM | #81 |
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Those people that say they don't notice a lag - what version of the software are you running?
If there's a noticeable difference - which was stated in other post - this really would have me worried and second guessing getting into the 135 - but then again, what's out there that's a whole lot better (in the price range)? Is it just me but I've noticed that there' nothing "special" out there right now.... |
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06-19-2008, 09:44 AM | #82 |
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I didn't notice ANY lag on my 135i. It was built in May so it has the new computer. However, maybe things will change once I take the car to the dealership for the first time.
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06-19-2008, 11:50 AM | #84 | |
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This thread exists because this problem, if real, makes this car less appealing and we'd like to find or at the very least be informed of a solution. Everything else is semantics and a complete waste of time. |
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06-19-2008, 12:49 PM | #86 | ||
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So until there is PROOF (real dyno P R O O F), then the speculation only leads to more posts like this. NOW...what BMW did/does advertise is really irrelevant until we know what we are dealing with. If you want my theory: Since the issue is wastegate rattle, then the fix was to leave the gate open rather than closed. Now if there is lag (again NO PROOF) then it's the brief time that's the wastegate to close that is causing the potential issue. |
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06-19-2008, 12:52 PM | #87 |
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So far that I've also gathered that, people who have the new 29.2, don't notice any lag, and the majority of complaints is from people who have not recieved their car yet. If you really want to find out real quick, just test drive one at the dealership.
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