I tried it on mine and, in all honesty, without much of an understanding as to what it was.

What I had hoped for was a way of holding a button to give a secondary low rev limit, I was wrong!

The button applied various things like Ignition Retard to get the turbo spooling. So, a little like ALS, but it seemed far more aggressive. I haven't touched it since as the RST doesn't need any more help towards having NO traction on launches. It's less standing-start power thats needed, not more!!

Full Throttle Gearshift. There's another. Mighty impressive, but it got my Alcon 6-Paddle spinning without a hope of holding it!!

Both good features, but you need a proper transmission for them to be worthwhile.