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11-15-2010, 06:03 AM | #1 |
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Transien throttle cut off while cornering!! freaking out
This is the second time it happens. 1st time was few days ago but I couldn’t believe it happened and found 17 different reasons to calm myself down. This morning is the second time. When I’m taking a 90 degree turn from a standstill and I try to overpower the DSC the car holds back and there is a transient throttle cut off as if I hit the rev limiter. Then it responds again. Is that normal? I wanna believe that I can always overpower the DSC if I want/need to. I had my car for over 6 months with almost 13000 miles on it and this week was first time to experience that TWICE. May be I’m getting used to the car limits and started pushing beyond them, may be the tires aren’t as good as before or may be I have a real problem. Thoughts please
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11-15-2010, 07:37 AM | #2 | |
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11-15-2010, 07:42 AM | #3 |
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Yeah I know that if I used MDM or shut the DSC off it shouldn't happen (I'll make sure thought) but it didn't feel right at all. The engine sound went silent and the car experienced a brief DEATH. That doesn't sound right! It was like a setting duck for a second. I don't have the DCT lag issue but from others describing it, it kinda feel like that.
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11-15-2010, 09:37 AM | #4 |
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Its normal. You can not overpower the DSC, that is why you can turn it off. Your tires are older and weather is colder, so this will be more noticeable.
If you want to drive like the way you describe - turn traction off and learn to use your right foot to modulate.
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11-15-2010, 09:47 AM | #5 | |
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I don't have that M mode or whatever in my car, but I think you're able to change the "sensitivity" of the DSC. Just watch out since we're having much colder weather now. In the mornings leaving my development at grandma pace, the rear end wiggles a bit when it's below 40 degrees F.
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11-15-2010, 09:49 AM | #6 |
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DSC can be subtle or abrupt depending on what is needed to "regain" vehicle control. If DSC is active, it will have "first rights of refusal" for your throttle requests.
MDM mode will "learn" your driving style and begin to allow the power-on oversteer you are "requesting" as you ask for it. You have to have MDM active for it to learn, though, so it will start off at "Full DSC" and gradually allow the driver more control. I usually drive with MDM active, and have noticed the dynamics where DSC used to intervene have been relaxed. Give it a shot! |
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11-15-2010, 10:26 AM | #7 | |
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11-15-2010, 10:49 AM | #8 |
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I suspect part of the problem may be cold temperatures in the tires due to colder weather. On the PS2's low temperatures can make a big difference.
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11-15-2010, 10:52 AM | #9 | |
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11-15-2010, 11:09 AM | #10 |
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Conti 3 here! But they could be the same.
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11-15-2010, 12:36 PM | #11 |
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I usually drive in MDM mode all the time when it gets cold. Otherwise the tires slip a little, and power cuts and your screwed. A little wheel spin is okay.
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11-15-2010, 12:49 PM | #12 | |
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11-15-2010, 01:04 PM | #13 |
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By cranking in 90 degrees of steering and then full or heavy throttle, you have just given the computer the perfect storm of pending disaster. So yes, it will certainly shut down the throttle, probably along with specific corner braking to regain what it is interpreting as a loss of control.
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11-15-2010, 01:43 PM | #14 |
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I've started turning DSC off regularly unless driving on the highway, or in really bad weather. I leave it on on the highway because I think it may help if you are trying to execute an emergency steering maneuver. But otherwise...
On track it was absolutely amazing how much faster and smoother I was with the DSC off...
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11-15-2010, 02:03 PM | #15 | ||
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11-15-2010, 02:27 PM | #16 |
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11-15-2010, 02:30 PM | #17 | ||
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11-15-2010, 03:37 PM | #18 | |
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That said, the M3 supplemental manual doesn't mention anything about learning behavior either. MDynamic Mode MDM* M Dynamic Mode is a mode of the Dynamic Stability Control DSC that permits greater longitudinal and lateral acceleration when driving on dry surfaces, yet with reduced driving stability. Only at the absolute limit of stability does the system intervene to stabilize the vehicle by reducing engine power and applying the brakes on the wheels. In such situations, additional corrective steering maneuvers may be necessary. -424D57 |
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11-15-2010, 05:05 PM | #19 |
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I don't think MDM learns your driving style. Where did that come from, besides this thread.
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11-15-2010, 06:16 PM | #20 | |
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11-15-2010, 11:11 PM | #22 |
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MDM does not learn your driving style or adjust the amount of intervention based on how you're driving.
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