not soo much the best system, its what you do with it, megasquirt will do 99 percent of the things you require, as will the standard weber system, just its easier for the DIYer to map MS, of course you can spend much more money on other stand alone EFI systems that are "faster" and have more zones and a few more functions but im not sure its entirley necesary IMO, obvously a lot of tunning companys out there making a living on this game will tell you thier particular brand of ecu is the best for obvious reasons, but at the end of the day its you decision. If someone else is mapping it for you and they suggest an ecu then go with that, if you are mapping it then i would go MS.