all the topics about management recently on here id say that the megasquirt would be the one to go for as the l8 comes into its own on a cossie in the right hands but if you want to learn abit of tuning or are already got a idea how tomap it then megasquirt is the way to go also to the point where its closed loop without exspensive upgrades and the add ons to like wi nos control wich are right there ready to go