Engine, Drivetrain & Forced-Induction
Have Technical Questions or Done Modifications to the G37? Find out the answer in here!

VDC frustration

Thread Tools
 
Search this Thread
 
Old 06-20-2008, 03:37 PM
  #31  
fmrlegend
Registered Member
Thread Starter
 
fmrlegend's Avatar
 
Join Date: Jan 2008
Location: Murrieta CA
Posts: 503
Received 1 Like on 1 Post
Originally Posted by Orbie
^ PM sent j/k

My bet is it's not the VDC, you have a non-sport and that VLSD makes a world of difference if you're pressing your car hard on a turn. It doesn't surprise me in the least if you are taking a hard right trying to acclerate out with no limited slip that the VDC will kick in. Most of the people saying they don't experience this issue (myself included) have the sport model.
I do have a non-sport and most of you here have a sport and that VLSD. Don't know much on how that VLSD work but have an idea though. May be that is the difference why my VDC kicks in all the time.

Last edited by KAHBOOM; 06-20-2008 at 09:27 PM. Reason: fixed quote
Old 06-20-2008, 03:50 PM
  #32  
shmad
Registered User
 
shmad's Avatar
 
Join Date: Feb 2008
Posts: 130
Likes: 0
Received 0 Likes on 0 Posts
i drive w/ the vdc off all the time (sport model). its def. much much faster. after the tires are warm its next to impossible to get the rear end to break loose even under WOT acceleration. last weekend here in nyc i had the VDC off and ran it hard from a dead stop midway thru third. on the 1-2 shift all i heard was a chirp. the back end didnt even let out at all. so if its warm out and the tires have heated up u dont need the vdc on. getting it sideways around a turn is a different thing entirely its actually very easy to control and the back end straightens out quickly
Old 06-20-2008, 06:42 PM
  #33  
Mike
Registered User
iTrader: (1)
 
Mike's Avatar
 
Join Date: Feb 2008
Posts: 4,549
Likes: 0
Received 20 Likes on 11 Posts
VDC is not 'cruide'

It does not simply CUT power; it works in stages.

If the VDC is completely cutting your power, then you are pushing WAY beyond the limit of the car.

The VDC only intervenes as necessary.

1. apply brake on slipping wheel.
2. reduce engine output while applying brakes

in that order.

Reduce can go as far as CUT if needed.

Ever do a hard 1-2 shift where the VDC light blinks but doesnt cut? Then another time you do a hard 1-2, but the VDC light blinks and DOES cut the power?

Those are different stages of VDC kicking in.
Old 06-20-2008, 07:19 PM
  #34  
JonnyOzero3
Registered User
 
JonnyOzero3's Avatar
 
Join Date: Apr 2008
Location: 000000N 0000000E
Posts: 143
Received 0 Likes on 0 Posts
Originally Posted by mike@riverside
VDC is not 'cruide'

It does not simply CUT power; it works in stages.

If the VDC is completely cutting your power, then you are pushing WAY beyond the limit of the car.

The VDC only intervenes as necessary.

1. apply brake on slipping wheel.
2. reduce engine output while applying brakes

in that order.

Reduce can go as far as CUT if needed.

Ever do a hard 1-2 shift where the VDC light blinks but doesnt cut? Then another time you do a hard 1-2, but the VDC light blinks and DOES cut the power?

Those are different stages of VDC kicking in.
Good post.
Old 06-21-2008, 11:21 PM
  #35  
ObsidianGT
Registered User
iTrader: (1)
 
ObsidianGT's Avatar
 
Join Date: Apr 2008
Location: SoCal
Posts: 192
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Orbie
^ PM sent j/k

My bet is it's not the VDC, you have a non-sport and that VLSD makes a world of difference if you're pressing your car hard on a turn. It doesn't surprise me in the least if you are taking a hard right trying to acclerate out with no limited slip that the VDC will kick in. Most of the people saying they don't experience this issue (myself included) have the sport model.

And I wouldn't say that you don't know how to drive the car in comparison to your old Acura, it's just the powertrain layout of a RWD is going to be much less forgiving then a FWD when pushed. This is one of the safety aspects of FWD, you always know if you're pushing your car too hard because even before tire squeal, the car will begin plowing through the turn and oversteer. You have to let off the gas or your car will go off the road or into a barrier, but you'll know way ahead of that that the car is pushing it's limits. RWD is different and especially so in the case of a high powered car, there will be little to no warning without electro nannies like VDC. Like that previous poster who had a friend with the 911, for most non-pro drivers, first time you'll know is when you're sliding sideways or facing the wrong direction of traffic.
You mean understeer, "a handling characteristic of an automotive vehicle that causes it to turn less sharply than the driver intends because the front wheels slide to the outside of the turn before the rear wheels lose traction."

fmrlegend, I've been through a lot of RWD cars and a couple of FWD cars (between my parent's cars in highschool and my own since). RWD from a 1984 Toyota 1/2 Ton Pickup (manual learner), 1995 Toyota MR2, 1996 Toyota Supra NA, and now my Infiniti G37S. FWD from a 1988 Nissan Pulsar, 2001 Ford Focus ZX3 , 1995 Mitsubishi 3000GT (where I learned to HATE FWD's torque steer--never again!!), and a 2003 Toyota Matrix XRS. All of which were/are manual transmissions except the Matrix. Let me tell you, FWD and RWD are WORLDS APART in the way they communicate with the driver and the way they respond to driving forces and road friction.

The first thing you have to learn is the difference between understeer and torque steer from FWD and oversteer and tractive force/slip angle.
Old 06-22-2008, 01:13 PM
  #36  
Mike
Registered User
iTrader: (1)
 
Mike's Avatar
 
Join Date: Feb 2008
Posts: 4,549
Likes: 0
Received 20 Likes on 11 Posts
FWD can oversteer depending on the suspension setup... especially lift-off oversteer during a chicane.... =P
Old 06-22-2008, 01:37 PM
  #37  
LAG37
Registered User
iTrader: (1)
 
LAG37's Avatar
 
Join Date: Jan 2008
Location: Los Angeles, California
Posts: 1,438
Likes: 0
Received 0 Likes on 0 Posts
vdc should be on unless ur on a track or ur messing around
i drive with it on and have no problems
Old 06-22-2008, 01:55 PM
  #38  
ObsidianGT
Registered User
iTrader: (1)
 
ObsidianGT's Avatar
 
Join Date: Apr 2008
Location: SoCal
Posts: 192
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by mike@riverside
FWD can oversteer depending on the suspension setup... especially lift-off oversteer during a chicane.... =P
Mike, I should he-bitch man-slap you but that statement was just all kinds of awesome.
Old 06-24-2008, 11:31 AM
  #39  
SenSpeed
Registered User
 
SenSpeed's Avatar
 
Join Date: Oct 2003
Posts: 10
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by mike@riverside
VDC is not 'cruide'

It does not simply CUT power; it works in stages.

If the VDC is completely cutting your power, then you are pushing WAY beyond the limit of the car.

The VDC only intervenes as necessary.

1. apply brake on slipping wheel.
2. reduce engine output while applying brakes

in that order.

Reduce can go as far as CUT if needed.

Ever do a hard 1-2 shift where the VDC light blinks but doesnt cut? Then another time you do a hard 1-2, but the VDC light blinks and DOES cut the power?

Those are different stages of VDC kicking in.

I disagree. When accelerating straight, if you chirp the tires going into 2nd VDC will kick in and cut your throttle. It is crude unlike BMWs.
Old 06-24-2008, 03:25 PM
  #40  
jungwoo0622
Registered User
 
jungwoo0622's Avatar
 
Join Date: May 2008
Location: los angeles
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
i often go to angeles forest with vdc off.
no vdc kick in problem what so ever.
maybe automatic has that problem or you need appointment with a dealer
Old 06-25-2008, 08:58 AM
  #41  
JonnyOzero3
Registered User
 
JonnyOzero3's Avatar
 
Join Date: Apr 2008
Location: 000000N 0000000E
Posts: 143
Received 0 Likes on 0 Posts
Originally Posted by SenSpeed
I disagree. When accelerating straight, if you chirp the tires going into 2nd VDC will kick in and cut your throttle. It is crude unlike BMWs.
It doesn't always cut the throttle hard while chirping into second. You're stomping on the gas, and without VDC I bet you'd be kicking your tail end all around.
Old 06-25-2008, 09:18 AM
  #42  
fmrlegend
Registered Member
Thread Starter
 
fmrlegend's Avatar
 
Join Date: Jan 2008
Location: Murrieta CA
Posts: 503
Received 1 Like on 1 Post
Originally Posted by JonnyOzero3
It doesn't always cut the throttle hard while chirping into second. You're stomping on the gas, and without VDC I bet you'd be kicking your tail end all around.
I tried a hard right turn with the VDC off, and sure enough the back end drifted about a foot before I had to let off the gas a bit to straighten up. So it's not that much more of accerleration/speed after the VDC kicks when the back end starts to drift.

But it just feels better knowing what your car is capable of doing and what not. I know what won't spin out or any thing on a sunny day with the VDC off, just have to know the cars limit or ease off the gas pedal when the back end drifts a bit. For sure on a gloomy misty, or rainny day the VDC will stay for me.
Old 06-26-2008, 02:50 PM
  #43  
JonnyOzero3
Registered User
 
JonnyOzero3's Avatar
 
Join Date: Apr 2008
Location: 000000N 0000000E
Posts: 143
Received 0 Likes on 0 Posts
^
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ben-g37s
Engine, Drivetrain & Forced-Induction
1
09-22-2015 01:36 PM
ZachThomas
Newbie Corner
2
09-03-2015 01:40 PM
Twista
G37 Sedan
4
08-30-2015 12:23 PM
moy92
G37 Sedan
1
08-20-2015 08:43 PM
moy92
Engine, Drivetrain & Forced-Induction
0
08-19-2015 05:30 PM



Quick Reply: VDC frustration



All times are GMT -4. The time now is 12:30 PM.