Mega what??

LOL... you guys are doing electronically what I built several years ago, but I went mechanical injection. Using Bosch mechanical air flow meters (2) and injectors w/variable pressure regulator, cold start valve and barametric regulator. Mine worked fine but was not as infineately adjustable as yours will be. Only advantage mine had was no OXsensor needed ..lol
Good luck and hope you enjoy using it asmuch as making it (half the fun is making it and making it work )