gas mileage Mechanical vs Vacuum Secondaries

Is that your defense? You were too busy? You even posted that bs right there as if a plug constitutes a power valve.. whatever man. You don't have time? You post at least five times every day for over five years but you did not have time?

I post when I can, to try to help. I don't always have time to search for every post I've made. And no, I didn't have time.

A plug is not a power valve and he never said that power valves are open under cruise conditions. What are ya, a politician? LOL

"Bob" said they were open under power conditions. The opposite would be a no power situation. Can't cruise with no power. What are you, an appointed cabinet member?. :-D

My point with the power valve is that can just be simply screwed in and the orfices are even adjustable. No carb is going to work for every application on every engine off the shelf. Just because a carb comes with, say, 68 jets..... Would you never change them even though you may be running rich or lean? Most carbs don't come with jet extensions, so they should never be used?