All about launch control...

[hackish]

Some firmware has a feature that can be used like launch control from the factory. Other firmware has special launch control patches written by me.
a) If the vehicle speed is less than Launch Control Maximum Speed
b) the RPM is above Launch Control Engage RPM and launch control is not already engaged

Then a the fuel is cut until the RPM drops below the Launch Control Engage RPM or the vehicle speed increases above launch control maximum speed.

launch.jpg (19.41 KiB) Viewed 23257 times

Most AT cars with the feature are setup from the factory as pictured.
Here are some pointers to setting it up for a performance application:
- Try to keep the resume RPM lower than the engage RPM but very close to it. Depending on the RPM this can cause a buncy limiter or a very smooth one. Adjust according to your preferences.
- Use a low maximum vehicle speed but not too low that the limiter disengages if you begin to roll at the line. 10kph is a good spot.
- If the vehicle's speed sensor fails you may encounter the limiter as the ECU believes the vehicle is stationary when it really isn't.

-Michael

[SpyderGT]

I have a question about this and perhaps anyone who's used it can chime in but how do you actually set the launch control to work on the car? From my understanding, all I need to do is set my rpm's and speed, flash my ecu and then by holding the clutch and gas down the launch control should engage? I've tried to do this several times but nothing is happening. Right now I have it set as seen in this picture. It's set low now just so I could see if it worked while sitting in my driveway, no need to piss my neighbours off. My car is also 3.8l 6 speed, in case that matters.

[hackish]

6 speed is going to be the manual transmission so I think it needs the launch control patch.

-Michael

[Nicolaralliart]

Does the software for the ralliarts have launch control. Also what is the ideal rpms and speed to input?

[hackish]

The MT software for the ralliart can have launch control if it's requested. I am presently working on a way to apply it as a patch by just clicking a checkbox but before this is done you'd need to send me your tuning to have it applied to just that file.

-Michael

[Nicolaralliart]

Hey hackish, sorry for the extremely late reply but where do i send the tune to?

[TrevRoar]

How would one safely disable the launch control? Just set the RPM range higher?

[cranswick]

have you tried to set the disable speed to 0...I've never tried, just a suggestion...I haven't been testing the software much lately because I have a bent shift fork, so I have no 3rd gear, and I got a bad CV joint...I can have a poke around and see if I can find a good method if you haven't solved this on your own.

also setting the rpm as high as your rev limit would likely have similar results...although, pointless, as that rev limit is already there, but maybe set it to like 4,500 or something, no need to launch the car at 6,000, and you should be able to do a burnout at 4,500 anyway.

sorry for the late replies.

[hackish]

How would one safely disable the launch control? Just set the RPM range higher?

You can set the disable speed to 0. You can set the RPM to something insanely high like 10000 rpm.

-Michael