Are my new stiffer sways screwing with VDC?

Red__Zed · 01-03-2011, 09:48 AM

Quote:

Originally Posted by Jordo!

I doubt it. VDC probably just responds to wheelspin as it happens.

Yep. Responds based on monitoring wheelspin.

OP, you can usually mash on the gas and get the rear to step out pretty easily, even with VDC on. I think it's normal.

Mt Tam I am · 01-06-2011, 12:49 AM

Quote:

Originally Posted by Red__Zed

Yep. Responds based on monitoring wheelspin.

OP, you can usually mash on the gas and get the rear to step out pretty easily, even with VDC on. I think it's normal.

If you mash it, sure. As I would have expected. As opposed to my surprise.
Oversteer, coupled with light gas in a tight uphill turn was my mistake.

.

SeattleLion · 01-06-2011, 03:55 PM

Quote:

Originally Posted by Mt Tam I am

If you mash it, sure. As I would have expected. As opposed to my surprise.
Oversteer, coupled with light gas in a tight uphill turn was my mistake.

.

Apparently the Z VDC is slower to react than other stability control systems. This is a good thing. Everyone would turn it off it was in nanny mode like the Prius stability control. That is the other extreme. My Prius would never let the rear end slip an inch. It reduced the throttle instantly in situations where I know I could have turned without loss of traction.

VDC works on each brake individually and on the throttle. The math that controls this is really complex. The car maker can make the VDC as strict or lenient as it wishes. I give Nissan credit for building a VDC that will keep me out of trouble but won't nanny me and turn driving into a boring Prius experience.

m4a1mustang · 01-06-2011, 03:57 PM

It still should have a sport mode that lets you go a few steps further... VDC will only give you a couple degrees of yaw then it goes crazy.

Pharmacist · 01-07-2011, 02:59 PM

Quote:

Originally Posted by Mt Tam I am

I recently installed Hotchkis sways *. I was coming out of a turn, gave it some (not WOT) gas and the rear end tried to slide out. I lessened the throttle and corrected, I could see the VDC light flash on the dash. No big deal. My first thought was I had turned off VDC only to realize it was on, I had forgotten to turn it off, like usual.

I thought the VDC would not allow you to break loose like this (giving it too much throttle) while in a turn. It has cut my throttle before I could break loose. Are my new stiffer sways screwing with VDC?

I realize whatever happens it is my fault. I am driving. I just thought the training wheels that are the VDC, would have deployed.

* middle hole on rears.

vdc has a certain reaction time to respond. it is not immediate. on the dry it is no big deal, and fast enough. but driving on the wet or even snowy roads is a different issue. the slow response time is noticeable and the rear of the car can swing around by a surprising amount before the vdc activates.

Pharmacist · 01-07-2011, 03:02 PM

Quote:

Originally Posted by SeattleLion

Apparently the Z VDC is slower to react than other stability control systems. This is a good thing. Everyone would turn it off it was in nanny mode like the Prius stability control. That is the other extreme. My Prius would never let the rear end slip an inch. It reduced the throttle instantly in situations where I know I could have turned without loss of traction.

VDC works on each brake individually and on the throttle. The math that controls this is really complex. The car maker can make the VDC as strict or lenient as it wishes. I give Nissan credit for building a VDC that will keep me out of trouble but won't nanny me and turn driving into a boring Prius experience.

Um, you were actually trying to drift a prius? Other than the lack of power, isn't it also fwd? How would the rear end spin in the first place?

SeattleLion · 01-08-2011, 02:46 PM

Quote:

Originally Posted by Pharmacist

Um, you were actually trying to drift a prius? Other than the lack of power, isn't it also fwd? How would the rear end spin in the first place?

Stability control doesn't only prevent drifting. It also limits speed on turns. Obviously, you can't drift with a Prius. It is underpowered fwd. But the stability control is so aggressive that simply turning a corner can trigger it.

01-06-2011, 03:57 PM	#19 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	It still should have a sport mode that lets you go a few steps further... VDC will only give you a couple degrees of yaw then it goes crazy. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

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