From my personal experience on one of my previous cars (2013 GT500) the factory launch control and 2-step never worked well for us. We did testing with it early on at the track and the results were pretty bad. I believe that the launch control feature is for people have limited or minimal experience at the track. It basically helps prevent the tires from spinning by controlling the throttle and brakes.But why would the LC still show on my display if I have advance track completely disabled (hold the TC button and brake pedal for 5-10 seconds)? While the LC is on, the TC light is also on, and the LC works when I have the clutch pedal pressed and reach the set RPM. I would THINK that both of those would be totally NOT related... like since the LC and line lock and a couple other things are separate under the "track apps". ?? Who the hell wants to use line lock and LC with traction control?? lol
At the time I recall needing the ABS/Advancetrak relay installed in order for the launch control and 2 step features to be accessible. So if the relay is pulled you can't access track apps or driving modes.
Once we removed the ABS/Advancetrak relay and launched the car without the assistance of any factory launch control the results were completely different which is why we pull the relay anytime we race the car.
Jared
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