F/I and VDC?
Off throttle with the car in motion traveling down the road in gear. 
Exactly! I'm running Drag Radials 265/40/18 and kinetix traction and camber rods with the negative camber dialed out for maximum contact patch with sway bars, etc and the wheels are still spinning!
BriGuyMax, another great quote!
Originally Posted by phunk
there is no RPM signal then 
Originally Posted by BriGuyMax
Then you're not pushing your car hard enough. I have full suspension on my Z with wide, sticky tires on aftermarket wheels and I can still get it loose on the track.
As far as VDC goes...many boosted Z's have it..and I've yet to see someone post: "I accidentally left my VDC on and when I broke traction my engine blew up". I've activated VDC COUNTLESS times with my TT setup..and my motor is just fine.
As far as VDC goes...many boosted Z's have it..and I've yet to see someone post: "I accidentally left my VDC on and when I broke traction my engine blew up". I've activated VDC COUNTLESS times with my TT setup..and my motor is just fine.
Last edited by theking; Nov 3, 2005 at 11:07 AM.
Originally Posted by gersteinp
Phunk-- congratulations on quitting smoking! This is one of the toughest things to do but will make the most difference in your longterm health than anything any doctor could do for you (I know--as an ER doc).
Regarding VDC, although I turn it off when driving on dry pavement, I've found that with Stillen sway bars and NISMO wheels (245/275 front/rear), I've had no use for it anyway. My car is now stuck to the pavement in almost any driving situation. When I took the G up to Loudon, NH this summer for a driving course on their track, I could not break the car loose no matter what I did. So, with FI I think the best route is to rely on excellent wheels, tires and suspension rather than VDC--just to be safe, engine-wise.
Regarding VDC, although I turn it off when driving on dry pavement, I've found that with Stillen sway bars and NISMO wheels (245/275 front/rear), I've had no use for it anyway. My car is now stuck to the pavement in almost any driving situation. When I took the G up to Loudon, NH this summer for a driving course on their track, I could not break the car loose no matter what I did. So, with FI I think the best route is to rely on excellent wheels, tires and suspension rather than VDC--just to be safe, engine-wise.
What the other guys are saying about the car breaking loose... I would say that I can understand your situation. Both of them have Twin Turbos, and the way the torque hits at around 4000ish RPM, will cause tons of tire spin... but I see that you have a Vortech SC... the centrifugal supercharger will build torque in a much more linear fashion. I have driven a 385rwhp vortech Z that was on stock tires and I do not recall having many issues with traction.
The traction becomes worse when your lower your car or put on coilovers, as the spring rate goes up. You also start to get negative camber which takes away from traction. My car at 14 psi could spin the tires if I punched it in 4th gear on dry pavement... every setup is different, but you definatly will start to loose traction as you start to make more and more power, to the point where road tires cant even hold it any more.
Originally Posted by BlackSpec02
This KP tech module for VDC sounds awesome. Does it come with install instructions? I'm curious how hard it is to install and/or if it needs to be placed in a spot thats hard to get to? Can I do it in an afternoon?
Originally Posted by BlackSpec02
Cool, I just pmed him to see if he will extend the sale over to our forum too.
hopefully i responded to it.
yes the sale extends to everyone.
just please post over there with what you would like and add your name to the respectful list.
thank you.
Hey I PM'd kevin by accident. I didn't realize that he wasnt the one offering the sale. He pmed me back a corrected me though. I just sent you one this time. I don't have a name over on g35driver, i just pm'ed you on this forum.
But you just answered the big question. The other one was what the discount is with the group by? I am interested in the VDC memory module.
But you just answered the big question. The other one was what the discount is with the group by? I am interested in the VDC memory module.
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Joined: Mar 2005
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From: Glen Rose, TX
Originally Posted by theking
Here is a good thread to read concerning your question. VDC does cut fuel and control the throttle butterfly according to the Nissan manual. https://my350z.com/forum/forced-induction/120775-vdc.html Don't worry I'm not being a jerk and telling you to use the search button since there is alot of useless info that you would find in your search. The only thing that I will add is that if you are adding fuel via IPW with a MAP reference is that you will run lean and detonate. If you don't know what I am talking about then it probably doesn't apply to you.
Originally Posted by neffster
Super easy to do. You pull down the plastic cover under your steering wheel, unhook the hood latch (probably the hardest part of the job 
) then you pull down the wires beneath the steering column. KP Technologies recommends soldering the wires together, but you can use wire taps if you don't have access to a soldering iron. You just peel back the plastic on the wires, tap into them (instuctions provided with a wiring diagram) and you're basically finished.
Should take a newbie an hour or two to do it the first time if you really are careful and take your time. SFLG35 can do the job in about 20 minutes, but he's done dozens of these installs.
) then you pull down the wires beneath the steering column. KP Technologies recommends soldering the wires together, but you can use wire taps if you don't have access to a soldering iron. You just peel back the plastic on the wires, tap into them (instuctions provided with a wiring diagram) and you're basically finished.Should take a newbie an hour or two to do it the first time if you really are careful and take your time. SFLG35 can do the job in about 20 minutes, but he's done dozens of these installs.
Originally Posted by Randys_G
from that thread..."The VDC system is NOT NOT NOT a fuel-cut mechanism in the event of traction loss or yaw condition. VDC actually CONTROLS the throttle, so it's engaging is effectively the same thing as taking your foot off the gas very suddenly."
VDC does not slam the TB shut (as taking your foot off the gas very suddenly). It closes it to the point of optimum torque. Also, fuel cut IS performed. The term 'fuel cut' though is not clearly defined. I believe that fuel cut is individual cylinder cut, but that is just a guess. As stated above, if there is NO injection, the motor won't run lean.
I keep my VDC on most of the time, although lately I've found myself shutting it off every time I start the car. I wish there was a way to disable it automatically each time you start the car....
Originally Posted by KPierson
...
I keep my VDC on most of the time, although lately I've found myself shutting it off every time I start the car. I wish there was a way to disable it automatically each time you start the car....
I keep my VDC on most of the time, although lately I've found myself shutting it off every time I start the car. I wish there was a way to disable it automatically each time you start the car....
Actually there is a KILLER gr0up buy going on right now... check it out!
cough cough t-shirts cough cough raffle cough cough...
Though its somewhat of a tangent, but Im debating between an Enthusiast or a Track Edition and it seems that VDC is the only difference between the two in my case (unless someone can shed some light on something that I might have missed) (I may be upgrading to a full BBK set up so the stock brembos arent that big of a factor)....back on point...I will be turboing the car within a few months of ownership, daily driving the car and occasionally tracking the car on weekends.....is having VDC equipped car need, recommend, etc. for me?
thanks in advance
Will
thanks in advance
Will
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