Different Carb or EFI

There is a significant learning curve to understand the tuning process for efi. There is significant information to process, things like MAP, RPM, temperatures, throttle position WBO2, and knock. Good EFI systems with ignition controls have more adjustments than choke thermostat, jets mechanical and vacuum advance. An optimal tune requires placing correct numeric values, in the correct locations. By location, means fuel enrichments need to be done for starting prime, warm-up, temperatures, acceleration enrichments, and VE table. Similar with less complications, for ignition timing map. Done correctly, it takes time and various operating conditions. Waiting for cold weather to do a start-up/ warm-up tune, things like that. The results can be excellent, great manners, power and economy all in one. Or a disaster for some. Like most things, it is a matter of attention to details.