these days, if i need to tune a carbed engine, it takes me about as long to tune one, as it does for modern tech to set up the equipment and measure the gas levels.
maybe one day i will pick up an inexpensive exhaust gas analyzer, who knows.
I can tuna fish w/mayo. I can tune a Holley 5 ways on a Sunday.
What I can't do is tuna anything
when the temp is under 50* before it even starts, within a few revolutions adjust choke and ratios then continue adjusting as it warms like a monkey under the hood the rest of the day, can you? and a trailer hitch to pull the sniffer
EFI will ever increase just like electronic ignitions.