[John S Peterson]

WOW this is all really cool......sounds like the history channel....Remember NOX devices from the 60's and 70's and coolant temp overides and idle stop solenoids and so on, that everyone unhooked or took off now makes a little more sense than it did then, well except for the NOX device prior to the EGR valve which actually created more NOX than it reduced thats why retrofit devices went by the wayside. Isn't another benefit of manifold vacuum to dist is more initial timing when running but easy cranking?