Ok....I wanted to get some opinions on this as well as check and see if what I'm thinking about doing is smart or stupid. I have an edelbrock quadrajet model 1904 carb on my 84 c20. I have been getting around 11-12 mpg on trips entirely on the interstate. Recently, after I noticed that the electric choke wire had been disconnected from the fuse box for what I believe was an entire tank of gas on a trip entirely on the interstate....I got 14.5 mpg. It obviously didn't effect the performance enough for me to notice and since I got such an increase in gas mileage (20%).....I was thinking of adding a simple on/off switch for the electric choke. I don't have an ECM, so no issues there. It might have been a fluke, but I can't see what else could have caused such a sizable increase in gas mileage. If I were to install this switch, I am expecting to probably have to use it more in the colder weather....but once warm....I would be able to shut it off to save on fuel once warm. Am I way off base in trying this out? Does what I describe sound like that the "turning off" of the electric choke could have caused such a MPG increase? Opinions and thoughts are welcomed.