Hi, Without spending alot of money, which is a better way to tune, Using one of those air/fuel gauges or a exhaust temp gauge? Do those air/fuel gauges react fast enough to read at the end of a 1/4 mile run? EDIT,,,,, I just remembered I have a working exhaust temp guage from Banks for a tubro diesel but it only has one probe. Would I be able to tell much off one cylinder with it? What kind of temps should I be seeing at wide open throttle if its jetted right?