Sequential Multiport EFI

Just so you know, sequential fuel injection goes batch fire in upper RPM or WOT. Take the time to learn the basics of EFI. (It doesn't matter who's system it is, the basics are absolutely the same). Most aftermarket systems are based on GM components, so study up on them and learn what they do. No engineering course needed, just a little homework. It will help you in the long run.

Also, don't be too hung up on the "choke" thing. Most ECMs will have separate mapping for cold start/running vs. closed loop normal operating temp.