I have seen some posts on miata.net and mazda-speed.com regarding Hydra and launch control. I decided to try it in hopes of saving some time when launching at Auto X events.

The procedure is pretty simple
Go to the settings>ignition>launch rpm soft and enter av value where you would like the rpm to hold steady while the clutch is engaged.
I found a value of 4000 rpm to work best. This holds the rpm steady when launching and retards ignition creating boost pressure. I think i saw 0.1 bar but it could be more.
The point is to launch with just enough power so the engine wont bog or the wheels spinning.
I heavent measured but I think I'm faster from a standstill. At least It seems easier on the clutch. Looking forward to try it at the next Auto X.