a/f
a/f
I have egt, a/f and knock, Like t66 said if you start seeing high numbers you better back off, but the best gauge I have is the J+S Safeguard ignition and knock display. It gives you proof if you are lean(too much boost,octane,det). Kind of high, but full ignition system too. I got the ignition used(cheep) and orederd the gauge for it, it also has a/f on it. It only looks for knock on igtion firing,so it does not see"spark knock-pinging" it only looks for on cycl firing. It also retards each seperate cycl on how much knock the ignition sees. His site is J+SSafeguard.com, check it out if you think it would be usefull.
