After our last discussion on this I went out to my coronet to play around with the advance, needless to say I found the diaphragm bad. I noticed my idle speed was a bit higher and fuel millage dropped off some a while back, but I never thought of looking at the advance can. Hopefully my new can comes in today, I plan on hooking it up to ported and playing around a bit to see if I notice any difference...
Would be nice if Don from FBO chimed in on this, he is a manifold only guy. Might make an interesting discussion ....
