Acceleration and Gearing

[juma]

Originally Posted by JetTech

The traction control can only do so much to prevent wheel spin. It has enough grab from the brakes to hinder your dry pavement burnouts, but with a wet surface, of which has a much lower coefficient of friction, it can be overcome as you've noticed.

GM's programming limits torque until 2500 rpm. I think we have a dose of that thrown in too and that's whats making it hard to mod our way into the 14's. juma

[rholland]

"GM's programming limits torque until 2500 rpm. I think we have a dose of that thrown in too and that's whats making it hard to mod our way into the 14's. juma"

I think you may be on to something there. I noticed that when you take off fast, it really seems to come alive at around 3000 rpms.

[JetTech]

Originally Posted by juma

GM's programming limits torque until 2500 rpm. I think we have a dose of that thrown in too and that's whats making it hard to mod our way into the 14's. juma

I bet there's a huge dose of that in the programming as well. Good point...

[pciley]

I do NOT have VDC.

When I am at the track in the burn out pit, I am barely on the brakes, just enough to keep the truck from pushing forward, and I am BARELY able to spin tires for more than a second or two. Then it shuts down.

I DONT want to spin tires off the start, but I would love to be able to heat them up to get a better launch.

There is obviously something in the way of programming that prevents me from being able to smoke them, as less powerful vehicles would willingly turn tires all day long with a light application to the brakes to hold the vehicle still.

This picture would be impossible for me to replicate, probably takes atleast 4 or 5 seconds of mid-rpm spins to get the smoke. How'd they do that???

[NorCal 4x4]

All,

Don't forget the 4k RPM limit for the 1200 mile engine break-in period.

[Slurppie]

I'm sure heat soak would play a factor in this as well. My old Altima was prone to heat soak really bad and would have the same symptoms that allot of us have. I tried to turn them over this afternoon without power breaking and nothing happened, just an initial bog then around 2500 it awoke - sorta like my Altima. Winter time helped with the heat soak problem though.

[chazz1202]

With VDC off I can smoke em really well, (Just like the picture- did it on my test drive-but I didn't think I would buy the dam# thing just yet!) I don't know, I also smoked 'em in a KC I test drove I thought they all did it-?

[pciley]

KC vs. CC isn't really the factor. It's BT, or OR, or VDC. I have neither. No button to turn off. I think that's why I can't keep the tires spinning before it shuts the throttle down. G@# Damn drive-by-wire. That little 12V servo is starting to piss me off.

[BigPete]

I am betting that there are 2 versions of the program for the ECU. It seems that vehicles that were manufactured early on are able to break the tires loose where as vehicles that were manufactured later on are not. Maybe Nissan updated the ECU which is effecting the power at low RPM’s.

[juma]

Originally Posted by pciley

I do NOT have VDC.

When I am at the track in the burn out pit, I am barely on the brakes, just enough to keep the truck from pushing forward, and I am BARELY able to spin tires for more than a second or two. Then it shuts down.

I DONT want to spin tires off the start, but I would love to be able to heat them up to get a better launch.

There is obviously something in the way of programming that prevents me from being able to smoke them, as less powerful vehicles would willingly turn tires all day long with a light application to the brakes to hold the vehicle still.

This picture would be impossible for me to replicate, probably takes atleast 4 or 5 seconds of mid-rpm spins to get the smoke. How'd they do that???

old trick - bleach poured liberally on the tires. juma

[pciley]

haha.. nice! well, if I was driving a beater I would try that, but I really don't want bleach splattered all over the sides of the truck (paint fade and clear coat spotting).

It was bad enough cleaning off that "tire black" when it was splattered all over the place after spinning tires on normal driving. But at the track, burning out, your talking about slinging that crap all over.

I think I just need to bite the bullet and get a seperate set of rear wheels/race tires with some better traction, maybe a smaller tire overall diamater to lower the ratios too Cheater slicks.

[vw1972bugs]

I saw the car from Knight Rider "Kitt" on eBay and it had some cool features that helped it do some stunts and burnouts. It has two switchs in it, one was used to spray a light oil onto the back tires to enable burnouts and the other switch is used to kill the front brakes in order to do 180's and powerslides without using the e-brake.

[BigPete]

Originally Posted by vw1972bugs

I saw the car from Knight Rider "Kitt" on eBay and it had some cool features that helped it do some stunts and burnouts. It has two switchs in it, one was used to spray a light oil onto the back tires to enable burnouts and the other switch is used to kill the front brakes in order to do 180's and powerslides without using the e-brake.

the rear brakes maybe ?

[pciley]

I think he means to depress JUST the fronts... that was my understanding since the vehicle is obviously rear wheel drive.

I am 23, so I grew up in the 80's watching that show. Brings back memories of chasing down bad guys and what not.

Nothing will ever beat SMOKEY AND THE BANDIT with the 1976 trans am... 555 cubic inches, right? That's a hell of an engine... for a semi truck, let alone a coupe.

My all-time favorite car related TV show would have to be Dukes of Hazard!!! That show rocks. That hemi challenger? (charger?) was wrecked thousands of times. I saw some statistic about how many cars they went through and how many they rebuilt, but the numbers escape me.

WOW sorry for the off-topic

[vw1972bugs]

yeah back brakes, sorry.