Ive done a ton of search but dont understand exactly what tables using ecuflash you have to tune and how to get launch control to work properly. Since i got my car modded with ets open air filter a catt delete an a crushed diverter valve i have not been able to launch it again.
I take off asc and hold for 5sec till it beeps.
then put car in s-sport i leave it in automatic
i press the brakes really hard left foot
stomp the gas pedal very fast
climbs to 5000rpms hold it for 1-2 seconds at most.
let off the brakes and car doesnt move it just revs to redline.
I have search and found you need to adjust the torque tables.
but in the sst stuff there are a bunch of torque tables which ones do i adjust and how?
Sometimes it works and other times it does not work.
thanks for helping.

 

I've got this same problem now. Launch Control use to work everytime. Car was bone stock (factory tune) ran a 13.7 1/4 mile.
I put drop in HKS hybrid panel filter (still factory tune) car launched perfectly ran 13.5 1/4 mile.
I put MAP Upper intercooler pipe from turbo to top of engine. Car ran a 13.4 but not launch control will only work with the traction control left on. If I hold down the ASC button the car just revs to red line and slow down message pops up.
I recently put a 3 inch Cat Back exhaust and now the car would not launch at all not even with traction control left on.

How do I fix this?

 

I told my tuner to add spark cut have only tried it once and it works great. But reading a lot regarding spark cut it seems its harder on engine and clutches the thing is that with it i launches lower rpms 4600rpms and i dont get the slow down message as i did with the oem launch control.

 

Is the car tuned for your modifications?