318 MAX fuel economy builds?

Too much time wasted on a single aspect of the projects. I'm running a 1916 Edelbrock Avs2. The 1906 and the 1916 have different annular discharge venturi secondaries. The 1916 is advertised as as close as FI as you can get with a carb. I have run both versions and I agree with the ad. Who else is running the 1915 16 or the 800 cfm version and what are your thoughts on it's affect on mileage and performance?
Advertised. Boy, they got you hook, line and sinker. Run it all like you want. You're gonna do it anyway. I don't even know why you asked for opinions.