Originally Posted by theDreamer ocfoilist, are you sure it was traction control and not the fuel cutting out? It has been reported that people are having issues around certain turns
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03-11-2010, 02:21 PM | #31 (permalink) | |
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03-11-2010, 03:57 PM | #32 (permalink) |
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interesting....i've done a few donuts on very very slick icy surfaces (private lot in Big Bear for you "public safety conscious" ppl) and while the slip indicator lit, i did not feel any intrusion whatsoever. I did this not to enjoy doing donuts on ice (it's no fun at all), but to test the VDC system and observe how it functions. When i tried doing the same donuts with the vdc on, the system would not let me slip at all. I was just driving slowly in a circle with my gas pedal down to the metal. I'm thinking if the car was to interfere even with the vdc off, my scenario would have definitely triggered the interference. My front wheels were pretty much stationary and rears spinning very fast at different speeds. In case you're wondering if I didn't notice the intrusion due to it being 10% or 15% or some small percentage of a normal interference, I can tell you that it did not interfere. If it did, it failed miserably by hypothetically letting me crash into a tree while my car was spinning for many minutes.
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03-11-2010, 04:31 PM | #33 (permalink) | |
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The system is also completely unaware of the placement of trees around you |
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03-11-2010, 04:33 PM | #34 (permalink) | |
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Yeah, I think you need the back-up camera linked into your VDC before you get that kind of "assistance:
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03-11-2010, 04:47 PM | #36 (permalink) | |
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03-11-2010, 06:18 PM | #38 (permalink) | |
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It definitely wasn't fuel starvation: I agree with ChrisSlicks - that's a very noticeable feeling when you get fuel cut off. Besides, the entire day I had between 100% and 40% fuel in the tank.
Don't get me wrong, the difference between VCD on and off is huge. My personal feeling is that the VCD is more intrusive than, say the 350's. With it off, I feel free to control the car 99.9% of the time. I only noticed the control kicking in on a very particular situation and I am only taking a guess at the cause. By process of elimination, it definitely wasn't fuel starvation (pretty full tank the whole day). It wasn't some kind of engine malfunction because it consistently occurred on one spot of the track. It wasn't limp mode as I have an oil cooler and the temp never went above 200 degrees. If I backed off a bit on the speed straightening out of the turn, I had no issues, but every time I pushed a bit more, I would get an immediate power cut right where there's a slight unevenness on the track. But then again, it did not seem to occur anywhere else, so it's either a combination of uneven road surface and speed/lateral acceleration at that one spot, or some other unexplained phenomenon that causes a sudden but brief loss of power. I suppose time will tell as more people who track their cars give feedback on the feel with VCD off... Quote:
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03-11-2010, 07:58 PM | #39 (permalink) |
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I haven't had it engage when disengaged at the track and I took it from simple slides around corners to a full drift into a spin. And I don't remember the traction control light coming on either but it may have I dunno.
Either way with it on in turns there is a definite power cut but with it off... no such thing. |
03-12-2010, 07:35 PM | #41 (permalink) |
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Owner's Manual says that VDC OFF means exactly that, but ABLS and ABS are still active. Maybe folks are feeling ABLS kick in.
pg 5-27: "The VDC system uses an Active Brake Limited Slip (ABLS) function to improve vehicle traction. The ABLS system works when one of the driving wheels is spinning on a slippery surface. The ABLS system brakes the spinning wheel, which distributes the driving power to the other drive wheel. If the vehicle is operated with the VDC OFF switch pushed and the VDC system turned off, all VDC systems will be turned off. The ABLS system and ABS will still operate with the VDC system off. If the ABLS system is activated, the (slip) indicator (light) will blink..." |
03-13-2010, 11:31 AM | #42 (permalink) | |
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03-13-2010, 11:32 AM | #43 (permalink) | |
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03-14-2010, 07:09 PM | #44 (permalink) | |
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11-10-2011, 11:21 PM | #45 (permalink) |
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I have found that VDC is still active, albeit at a reduced level, even when switched off. I have attempted a smoky burnout with it off, lit them up great about halfway through the intersection, and then bog city as nanny Nissan shuts down the power. This is a real thing, regardless of what the literature says.
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