Dumb-ish VDC question

[Andy_V35Sky_350GT]

Does VDC engage only when the 'slip' light flashes (when it loses traction) or does it also engage when under heavy throttle? I havent really noticed a difference either way, but I generally leave VDC on, and only ever get the slip light when the road is real wet or I take off really heavy.

[Kenrik]

Sometimes it goes off if IT THINKS you are slipping or going to slip..

For example, I have had many times that I was pushing the car but nowhere near loosing it and it it kicked in. Another time I was in the rain and I was drifting @ 45MPH on an off ramp and it kicked in REALLY late.

So basically it kicks in whenever it feels like it. it saved my but a few times and also almost caused me to crash a few times.. I still don't know if I love it or hate it.

[G_whizz]

Yeah... it's kinda a love hate relationship. I ONLY drive with the VDC on in winter or heavy rain.

Try leaving your VDC on and hammering it from a complete stop under "slick" conditions... it will kick in. But it won't kick in if it's off.

Now... if it's off and you are in a bit of a drift or slide... it may kick in and correct itself. Mine has maybe once (and only slightly) I am pretty sure the VDC and slip light go hand and hand

[joe603]

To answer your question, yes it will kick in if it senses any wheelspin...on takeoff or skidding. The concept is great, they just should have put different modes like the GT-R has...

So if your under heavy throttle, and the rear breaks loose (1st to 2nd shift), it will step in.

[Minmey15]

Hello guys. I just got my 08 6MT sedan, and haven't had a chance to push it yet.. But does this mean even you turn it off, it comes back on automatically??? That would be way too dangerous to drift...

[G_whizz]

Welcome aboard and congrats on the purchase! be sure to post pics in the Members Rides area.

Like I said, I have done some pretty serious driving in my G... it only came on once and that was for a split second when I had the VDC off. It's nothing like when you have it on.

[zozoka1212]

On the x if you turn it off it does not come on at all. I drive it sometimes crazy hardcore but I never felt it when it turned off. That's probably because of the drivetrain in the X.

I guess.

zozo

[C-Kwik]

The VDC kicks in as it is programmed to anytime that slip is detected while the VDC system is on. The system actually only operates when it senses slip. Meaning, if you are in a slight slide and the wheel speed differences are within the programmed tolerance, it will not detect it as slip. So in theory, it is possible that the system may not detect slip even if you are. Probably won't be for too long though.

It's also important to understand that the VDC doesn't necessarily just back off the throttle. It does a combination of different things to try and bring the car back into "control". Backiong the throttle is the most noticable, but braking one or more wheels in conjunction is also common in lateral slip conditions.

My understanding of the system, at least in early G's, was that when the VDC is turned off, it remains off until you turn it on, or the ABS is engaged. At least this is what I read in a magazine article around the time the G35 was launched. I would speculate someone at Infiniti had mentioned this to the press.

[champagneG35]

When I did those donuts on the dry pavement with my vdc off. It mostly stayed off....what I mean by mostly is that since I was paying attention to where the car was going I wasn't looking at the dash. It never tried to stop wheel spin or anything but it sure got freaked out. When I finished I noticed the slip light was stuck on but vdc said off. Tried to turn it back on to no avail. Had to pull over turn the car off then start it again and everything was back to normal.

[Minmey15]

When I did those donuts on the dry pavement with my vdc off. It mostly stayed off....what I mean by mostly is that since I was paying attention to where the car was going I wasn't looking at the dash. It never tried to stop wheel spin or anything but it sure got freaked out. When I finished I noticed the slip light was stuck on but vdc said off. Tried to turn it back on to no avail. Had to pull over turn the car off then start it again and everything was back to normal.

Interesting.. All the similar systems I have seen stayed off when you turn it off..

BTW, your Z looks sweet! I want to get me one of those baby some day..Do you have L24 in there? Or did you swap it with L28?

[grantman240z]

Interesting.. All the similar systems I have seen stayed off when you turn it off..

BTW, your Z looks sweet! I want to get me one of those baby some day..Do you have L24 in there? Or did you swap it with L28?

It's all about the small block 350 swap!

[champagneG35]

Interesting.. All the similar systems I have seen stayed off when you turn it off..

BTW, your Z looks sweet! I want to get me one of those baby some day..Do you have L24 in there? Or did you swap it with L28?

I have the L28 in it. Dual SU Sidedraft carbs, upgrading to FI and CAI at somepoint when I have time. Have all the parts minus one little rubber hose/coupling to connect the throttle body to the CAI.

Yeah I know a few people that have done the V8 kit..my opinion though is keep the heart of it a Datsun or at least if you're going to stray keep it in the family with an RB26DETT

It's a work in progress, not finished yet . Somebody egged it too right smack dap on the drivers door/rear quarter windows so now it needs more paint again

[grantman240z]

My first 240z was a '72...the L24 threw a rod and decided to melt together. I felt that was the perfect time to build the 3.1L Stroker out of an L28 and slapped the triple Webber setup on her. Man, that was a fast little car and sounded sick too.

The 350 swap is great for a drag car...make that 2000lb car fly. Darius is still my hero with that LS1 in his 240z.

[g35sedanlover]

I noticed that when the VDC is off, it will only kick in under light throttle pressure (like when you are in the snow, the lightest touch will still make the G spin). When I am spinning in the snow and it kicks in, it will actually turn off if I hammer the gas. When I am spinning under heavy throttle, I think it knows that I want to be spinning (throttle position sensor) and disengages.

[champagneG35]

My first 240z was a '72...the L24 threw a rod and decided to melt together. I felt that was the perfect time to build the 3.1L Stroker out of an L28 and slapped the triple Webber setup on her. Man, that was a fast little car and sounded sick too.

The 350 swap is great for a drag car...make that 2000lb car fly. Darius is still my hero with that LS1 in his 240z.

Darius's Z is sick...but so is this one which honestly I'd rather have

Google image link to Q45 240Z

[tollboothwilley]

On my sedan, when the VDC is off it seems that the tolerance is just increased a lot higher.

In snow, the SLIP light will come on regularly no matter how much acceleration i seem to give. I really hate the fact that I can't turn it off completely... as was previously stated, they should have put a few different settings so you can have full control of your vehicle.

[04G356MT]

When I did those donuts on the dry pavement with my vdc off. It mostly stayed off....what I mean by mostly is that since I was paying attention to where the car was going I wasn't looking at the dash. It never tried to stop wheel spin or anything but it sure got freaked out. When I finished I noticed the slip light was stuck on but vdc said off. Tried to turn it back on to no avail. Had to pull over turn the car off then start it again and everything was back to normal.

mine does the same thing when i do donuts... as far as ive been able to tell if the vdc is off but the slip light is on like when we do donuts vdc isnt actually kicking in.. i think its more of a precaution to let you know that you just sliped the hell out of it...

[crashtestmuppet]

I've got the skyline 350gt, but would assume the softwares the same. Ive never had any trouble with the vdc, it's kicked in before i've had time to react quite a few times when cahooning around round-abouts, and when it's off, it stays off. Even when doing doughnuts (alledgedly )