EFI was a huge upgrade. When I was a kid you pulled the manual choke all the way out and pumped the gas pedal till you had fire in the holes then push the choke cable in just far enough so it would stay running and gradually warm up so you could take the choke off. Cold starts force fed fed way more gas than engine could burn back then. Fuel injections systems ran by computers fixed that problem. The old Chevys you could put automatic in N and warm up the tranny. Can't even put transfer case in Nuteral