Is there a way to get a proper launch control setup going for the Z auto tranmissions? I know Lambo's and Ferrari's have this on their paddle-shifter setup. Maybe it could be modded into the ECU?? Putting the brake on and burning rubber isn't always the best option.

Don't bother replying if you just wanna say get a proper manual.

 

you can preload by stepping on the break and the gas till around 3200-4500 rpm before u start burning rubber this tends to help ive noticed

 

by the time we get up to about 3k the rubber is alredy burning lol. if someone came out with something like this, id be first on that list.

 

Preloading wastes tires... I know it can be done, the transmission just needs to be told electronically to disengage the clutch when in 1st gear and launch control is initiated, maybe something like pushing the shifter forward would engage the clutch. Essentially doing the same thing as dumping the clutch on a manual.

Anyway i'll keep dreaming, guess i'll have to find a Ferrari, lol.

 

lol fu k it and neutral slap that b1tch haha jk... well i guess you could try it and tell us how many times it works before something goes out so that way we know to do it one less time.

 

good question

 

Load up the torque converter with brakes on, just so the rpms stay just before the tires let loose.

This is also a good way to know where the factory stall is at (@ what rpm)

I have a 3000rpm stall converter in my 72, if anyone cares. Takes a second to 'spool' up.

 

my 07 starts to spin when ever hit the gas hard.......i have 2000 stall and it is worst when i hold the brake and rev to 1600 rpm.......spinns with some wheel hop

 

Using a two step on an EMS (like the Haltech's auxiliary rev limiter) to load the drivetrain is the only thing I can think of that would work in a relatively similar fashion. Instead of clutch release, you'd have to tie the signal in to the brake release... I'd think things through though to make sure it doesn't exhibit unintended (dangerous) behavior.

 

Torque it to 2500RPM, and don't flog on green. You'll want to apply 3/4 throttle, and after all torque has been applied (~4500RPM) full throttle. Learning how to feather also helps tremendously. Ultimately, practice makes perfect.

 

+1..you beat me to it as always. 2step

Not trying to be disrespectful, but alot of useless info in this thread

Per Nissan specs : TC 2650rpms-2900rpms.....

 

What we need is a trans brake set up. I beleive on the domestics they engage 1st and reverse at the same time, gas it to launch rpm, then push a button and reverse releases. This is like dumping the clutch on a MT but the torque converter absorbs the shock which is a lot easier on the driv etrain than a normal clutch drop in a MT.

SOME ONE PLEASE MAKE THIS FOR US!!!

 

^^^ check with Injected Performance....

 

Its taken five years for us Auto guys to get any love from the Z tuner companies, hopefully one of the reflash companies or Cobb will get into the tranny control area since it is controlled by the ecu. It would be nice to adjust shift points and launch control through a program! I think its just a matter or time before someone does this as there are more and more options coming out for the auto guys: paddles, valve bodys, TQ's and so on!
Its another are of oppurtunity for the tuners to make money and close the gap on performance between the 6mt guys and us.
Come on Technosquare, AAM, Cobb and Cipher......hear the calling!

 

I think the Haltech does the things you mentioned..I'll let Raj (RCDASH)chime in

 

Well it would be nice to get above 3000 RPM, and right now you cant. It would be awesome if someone can mod the ECU to do this.

 

You can increase stall speed by upgrading the torque converter. My stall has been increased from 2600-2900 up to around 3200. There is no transbrake enabled valve body available for this transmission to the best of my knowledge. The Haltech can hold a certain rpm with the gas full depressed (aux rev limiter), which will release once an external trigger activates (usually clutch release, but it could be manual trigger or brake release). Keep in mind that the tranny temp will skyrocket as the TC spins and you hold the car in place. You get immense torque multiplication though. Don't do it for long - it's not as safe as a 6MT 2 step, where you can sit there all day with the pedal to the floor before dumping the clutch.

 

Your talking burning tires still... i'm not. A 6MT can do burn tires at a standstill just like we can if they are good with heel/toe. I want a true launch control, I know its possible. Someone here has to have knowledge when it comes to reprogramming the ECU. Maybe its not something easy to do, but I would think its just a command the ECU gives the trans.

Does anyone know if the GTR has a launch control system?

 

The GT-R does have launch control. Edmunds/Insideline reviewed a privately owned sample with 1500+ break-in kilometers. Launched the sucker to the tune of 3.3 sec to 60 mph twice, and this was on a not-fully-optimal surface! They set everything to race mode and turned off VDC.

http://www.edmunds.com/insideline/do...ticleId=124017

Sick! is all that ....

 

Show us how it is done here: https://my350z.com/forum/drag/233840-top-25-1-4-mile-times-for-tt-st-supercharger-nitrous-bolt-ons-stock.html.