turbo timers are pukka, well the only reason why i would have one is so i can warm the car up in winter without worrying about someone getting the car too far

apart from that yes its a gimick,,,, and you will get fucked off with people telling you your cars still running when you leave it anywhere i promise you

as rory said though, get a alarm built in one

mine old cars one was a blitz unit with a biult in boost gauge and boost warning system

let me look for a piccy of it