[sixty9fordkiller]

Originally Posted by Benman

Dyno numbers give you bragging rights, ET's give you win lights. A dyno is just a tool used for comparison, each dyno has to be calibrated and used properly, just as a torque wrench or a micrometer. If you use the same dyno before and after mods, operated by the same person, calibrated the same way, then you are most likely to get an accurate evaluation of performance gained, or lost. And yes corrected DA also figures into the equation. In all my years around race tracks though, I have yet to see a single dyno make a pass.