[pgfpro]

He should of went way more then only 36miles to get a more accurate test.

IMO the carb is doing better then the other carbs he tested based on a smaller jet and smaller single emulsion tube. The home built IAC valve is making a vacuum leak and taking away the signal from the main jet in which isn't good but hes getting away with it due to the small size of the carb itself pulling a strong signal, but this makes a higher pumping loss.

Hes also picking up more FE due to the small carb not really having much of a accelerator pump like a normal carb. Lots of raw fuel doesn't get atomized with the normal carb.

His A/F read 14.7 and this is where he and others like him don't understand. If you have a decent carb or EFI there will be no unburnt fuel going out the exhaust. So 14.7 A/F, the size of the engine 302CI, throttle angle, Cd, frontal area, mph etc. tell a math story. Plus when he said cruising at 70+ mph are not a great way to sell this.

I remember my first FE testing about 10 years ago I did the same thing went for a test drive under 40 miles went and filled the tank back up and thought I just made the most efficient engine man kid has ever seen. Then I join this site and got schooled and was told on here you need to go at least 300 miles or more to get a real true FE test. lol

EDIT: One more thing most carbs built for cars are from a long time ago (when was the last time a carb was OEM on an automobile) The fuel was way different then with a much higher VOC. Todays fuel has a much lower VOC and isn't really design for carbs. Go watch an classic cruise night when the cars are creeping along at a snails pace and you will see 90% of them with carbs smoking out the exhaust.