I think you can get a full throttle shift with rev limiter and launch control, with a shift light as a plug in extra. Theres a fair few RTOC members with them on GTTs. The rev limiter is just an ignition cut, and the launch control is just a simple push button switch. Im not sure how that works to be honest, i know you can set the limit to what you want and set the revs it returns to after the clutch is dipped,Im getting an Armtech unit fitted to my Clio GTT anyway.