VDC off???
 

Today, I was trying to drift my Z and I noticed even when VDC was off, VDC light blinked as my car was losing grip.
is there a way to completely turn it off??

Do what they mention in this thread and i believe you should be able to drift the z.
http://www.the370z.com/track-autocro...s-allowed.html

That just prevents power cut while braking. I'm not sure it will accomplish disabling the ABLS function that the OP is experiencing.

ABLS is part of the ABS system, and I believe you pull the ABS fuse to get it to deactivate completely.

You need to disconnect the module located under the e-brake cover. As mentioned this will also disable ABS.

I hope this wasn't on a public road... :icon14:

I don't think anyone got firm answer. With the VDC off, does the car still apply brakes to limit the wheel spin in the rear? (as indicated by the slip light going off).

I have been doing okay with the annoying light flashing, but is it actually robbing power off the turns?

It only blinks, there is no control once you turn it off, hence people doing doughnuts and whatnot.

Also, a better option for disabling it permanently is to buy a reverse module someone on the board sells. So, when you start up the car, it's off, and you have to push the button to turn it on. Much safer than pulling fuses that kill your airbag.

Yes, but the ABLS (not ABS) is suppose to act as a LSD even though the VDC is off. Is that the case (which means it is robbing some power)

If it is blinking it is active. If VDC is turned off the slip light will only blink and activate when there is a large differential wheel spin. It doesn't cut power but it does pulse the brake on the corner with the highest wheel spin. Most people don't notice it because the slow down is slight, i.e. if your wheel is really spinning that bad it really isn't propelling you forwards any.

It happens to me on track with cold race tires coming out of medium speed corners (70-80 mph). It doesn't really bother my situation but I could see it being a problem in a competitive style drift scenario.

Does the "stop lamp fuse" mentioned in the other thread prevent the the VDC from kicking in when you brake while drifting? With the VDC off, I noticed that if you push the brake pedal (even the slightest) while the car is drifting to slow down, it feels as if VDC kicks in and adjusts the car's position and reduces power/applies brakes to the rear.

The stop lamp thing limits power output regardless of traction. ABLS is a semi traction control. I guess it makes sense why this car doesn't do the single wheel burn out off fast corners

There are 2 issues at play in your above description.

1st is the brake/throttle interlock. This car cuts throttle input if you touch the brake. The stop lamp fuse should address this.

2nd is the ABS itself that works in conjunction with the stability control. Touching the brake has a tendency to "straighten" the car out. I think you would have to pull the ABS fuse to correct this.

Yup that's exactly the issue here. Even with my foot off the throttle, mid way through a drift if I wanted to slow down, pressing the brakes even lightly would straighten the car out, as if the VDC was switched on again.

Does removing the ABS fuse disable the Bosch yaw sensor? I really don't wanna take off the center console all the time.

It does, but the car has a natural rear bias in the braking system so without ABS you will easily lock up the rear brakes. You would have to find super wimpy pads to put in the rear.

are you sure the car will straighten itself out with the vdc off? with vdc off, only the abs and abls work. abls doesnt really stop your drift, it just limit wheel spins. no?

Well if you are at a 45 degree angle I don't know what it will do but at lesser angles yes it does seem to. Perhaps not as a result of any stability program but rather stopping all wheel spin will return grip. It seems to apply the brakes intelligently in corners even with VDC off in that you can brake as hard as you want and it will never upset the car.

If I understand how the ABLS work correctly, it seems to me that it only apply brakes to the REAR to limit wheelspin under power. If you go into the corner at 80mph and jerk the wheel to one side, I am not sure if the brakes will actually kick in to slow you down or straighten it out.

When you apply brakes while the car is sideway, I think it is the EBD that steps in to apply brakes at the correct corner. It is not the actual VDC

That may be true but regardless it is distributing the brake force intelligently using the same input data as the VDC receives.

Even if it was the EBD that is engaging the brakes, it is still helping straighten the car out. Why else would it apply brakes at a specific corner other than to stabilize the car?

That's what it is suppose to, part of drivers' aid.

I will pay more attention to it when I take it to the track this Friday. From my autox experience, I only see the light flashing from time to time. I honestly don't think it does anything for me, but then the lot we run are so pathetic that we rarely see over 55mph

Yeah and that's why I'm trying to figure out what's needed to shut this feature off and just let it brake normally during a drift.

Disable the ABS and you should be able to take care of the issue.

Or don't drift and drive straight?

ABLS never kicked on at track, I think the LSD does a decent enough job to not let the car do a one leg burnout. It seems like the problem is more autox related where you are in the lower gears. You can't disable ABS by pulling a fuse, they are wired together with bunch of other stuff.

ABS has it's own fuse but the fuse module also has the VVEL and Power Windows. You can get a replacement fuse module and then just cut the ABS fuse in the module.

I had ice mode/ABS problem at bumpy corners, but it's a lot better on smoother surfaces. I really thought about disabling the ABS at first, but I am not sure if modern cars really like that idea.

On a separate note, you can see how the VDC flash like a xmas tree no matter what I was doing at the track. The system is annoying on the Nissan, way too intrusive. My Prius has a nice stability control system

YouTube - 0810 VIR 370z lap with VDC on

Yeah, I did my first morning track session Saturday with VDC on. No matter how smooth I tried to be it just wouldn't let you accelerate out of a corner at all despite there being lots of available grip. VDC off and the car was great. Surprisingly the VLSD held up okay and I was able to rotate the car with the throttle.

The car didn't do a lot of one leg burnout (maybe once or twice coming out of T1), but a LSD would help quite a bit coming down the fast corner. I think that is one mod that is definitely worth the money, much better than wasting money buying stupid things like slotted rotors/calipers etc.

I lapped over 5 or 6 seconds slower with the VDC on.

1. Nissans do have the secondary traction control.
2. It will NOT prevent you to do any kind of slide unless you touch the brake pedal during a slide.
3. Why would you apply brakes during a slide unless you know your about to eat sh!t?
4. 40-50 mph 360 degree circle drift was no issue with my G35 and taking some 90 degree turns with a slide it doesn't look like the Z has an issue with it as well.
5. You do NOT need to worry about the ABS fuze unless you are trying to do a complete standing burnout where you have to apply slight braking for the car not to move and just burn tires.
6. If people are complaining about any traction control kicking in with VDC off then you should not be doing any sliding because 99.99% you are touching the brake pedal one way or the other during the slide which is pretty dumb in any car.....

i actually think our VDC isnt half bad. coming from an IS300, the Z is leaps and bounds better.

try a bmw porsche or even the one on my prius, the vdc on the z sucks

Even the pro drivers use brakes during a drift.

^rly...?
Didn't know applying the brake pedal would be a benefit during a slide since it does apply the brakes to all 4 tires.......

I hope you are talking about the handbrake use and not the brake pedal..

There are ways of adjusting brake bias. I would guess drifters shift bias towards the front wheels to help make a tighter line.

Yup! ^^

Right. but since we are having this conversation about a street car that is designed to make the car stop efficiently not to do small adjustments while drifting, i dont think anyone is going to use the brakes on the Z to make those adjustments. If you are hoping to make any adjustments with the brake pedal in the Z then get ready to say hi to the closest wall around. :)

Yeah, the average driver is going to stuff it into the nearest immovable object if they push the brakes while the rear is sliding. I think drifting is a stupid "sport" so I could care less what happens when the brake is pushed while sliding. As long as the computer controls will not interfere with me when I'm on the road race track I really don't care what they do, or don't, do.

If when VDC is off I can still late brake into a corner and initiate rotation, I'm fine with that. If computer controls screw up my line... then I'm getting an Evo X next. My last car was a base model 350Z with no VDC at all. I sold it due to school finances, I didn't wrap it around a tree, in case anybody is wondering.

Well having lots of experience with G35 now the Z which has the same VDC and traction control, i can guarantee you that it will not interfere (VDC off) when you are trying to brake late into a corner or exit with the opposite lock completely engaged at 75 mph......

Cool, then I'm still sold on a 370Z.

Weird

Hope this doesn't happen to you Vin Diesel

http://www.youtube.com/watch?v=1Jmac...ext=1&index=14

http://www.youtube.com/watch?v=jyO19...=16&playnext=2

http://www.youtube.com/watch?v=NrNAu...eature=related

And what do those videos have to do with this thread???