Can this forum come up with a reasonable EFI for small engines? So software, ardino or appropriate, and common source the bits throttle body, injector, airmass flow sensor, temp, etc. for small engines. It seems a better alternative to have a fuel injection system that compensates for density altitude automatically as a normal function than trying to cob up a carburetor that kinda' works. Maybe the files for an EFI could be filed in a manner for easy access.