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?

Also I have had the Thermoguard recommended to me by more than one guy. Who's a fan of the Thermoquad and what are your favorite aspects of them that motivate you to recommend them on a mileage car?