those engines have many different types of powerbands? an engine can only have 1 powerband unless the exaust legth is changed, the carb is changed, or many other factors which im sure no one cares about.
engines dont naturally match ALL tracks, for example most top TOP kart racers have about 10 motors minimum, each one has the characteristics for each circuit (bottom, middle and top end power differences)
cam tuning changes the power band of the engine slightly, meaning u could adjust it to have good bottom end power for tracks like AS Cadet or good top end for tracks like FE Black.
just a little thing for another version, colored and mirrored iridium visors would be nice, just to add to the look and individaulality of the drivers.
alright andy, i bought one that had been pre-ordered but hadnt been picked up from Gamestation, played with it a bit, no good games, but AWESOME for vids and films n stuff, then sold it for more than i bought it