I have been testing the launch control maps and it does what it needs to do for just 2 or so seconds. When i get into LC mode it bounces off the set rev limit then shoots into a free rev and i dont have a rev limit till i turn off the car and turn it back on.
If i get on and off the throttle quickly keeping it in its window it wont do it. But if I hold it or try to, it wont for very long.

Has anyone been able to use it consistently as it should?

 

i've seen this once before, but ive never really tried to replicate it...

the code is very simple, basically examines TPS and clutch down... i think perhaps the TPS is being pulled back by the ECU.

can you log TPS while your doing it and see if that drops below the threshold?

 

I've had this happen on a few cars but the weird thing (happened on 1 car) is after it drops out of LC parameters 2-3 seconds in 2step on v2 then goes into free rev, The car would not 2step even after turning the car off and on. Had to wait a few minutes till it was able to 2step again.

Settings that I remember for that one car
tps enable for LC = 50%
Speed = 14km/h

I just blew it off as maybe there is a subroutine parameter in relation to max rev limit * duration before it disables LC for X amount of time

 

Fixed?