Switch Controlled Rev Limit
 

For an endurance racing application I would like to keep our rev limit around 6800, however the engine can spin to 7100 + and make more power at the wheels at the expense of potential valve float for short durations.

I want to add a switch that changes the rev limit from 6800 to 7100. I think the only way I could do this is by setting the base limit to 7100 then turning on launch control at 6800, wiring the FLEX line to a switch.

Is there a better way?
Has anyone driven heavily with launch control always on?
Does the ECU do anything else in launch control mode beyond the settings in that menu?

I have an MS2PNP for 9093 on a 99 JDM motor with 99 TPS, sequencial injection, VICS.

It does indeed look like that will work. I have an MS3, and took a totally different approach. I also plan to use launch control (it is active).

Again, I looked at MS2 launch control and that seems a workable approach. Set the TPS very low.