Yep. A grand illusion. Like I said ..works for me.
All I'm saying is I use my vacuum gauge as my main visual feedback. I correlate this information with my MPGuino. The vacuum gauge is very accurate to measure vacuum in the system. Greater amounts of vacuum means least amount of fuel used (a balance of
minimal air/fuel mixture). This is verified with the MPGuino. I always drove for least fuel used. What part of this is inaccurate?