[Alan Roehrich]

What you'd look for when dyno testing headers would be average torque and horsepower through the RPM range you're running. You'd also want to look at the acceleration rate you test at. You have at least 3 different acceleration rates, if you have a 3 speed transmission, and that does not account for the fact that once you shift from first to second, from there on, your acceleration rate (in RPM per minute) slows at a progressive rate, the higher the gear, the slower the acceleration rate.