Lol. That statement just shows me that you know little about Megasquirt, Standalones, and efi control in general. The ver1 Megasquirt can run anything from a 1000hp 2JZ motor to a turbocharged V12. It will run them perfectly and is 100% proven to do so. The ver 2 includes more fuel control resolution as well as some other bs that one can do without.
Ver 1 will run any motor. No need to spend extra on a V3 unless you need to impress your tool friends while regurgitating specs.
Please dont make uninformed statements since that makes everyone that reads them a bit dumber.
Ver 1 will run any motor, Ver 3 will do the same. If someone wants a turnkey unit for half of what you would spend on a v3 let me know.