Dynojets are interia dynos. They calculate ur torque by measuring how long it takes you to accelerate a known weight (the rollers). A mustang type is a loaded dyno in which you can load the rollers to hold at a steady load. Makes tuning much easier because you can focus on certain situations and nail it down.

Mustangs are also "truer" for this reason. The load helps to simulate realworld driving while the dynojet just uses the weight of the drum as a constant.

 

mustangs are the only ones around me and that is what jestr uses to tune on...because it gives a more accurate number.

 

Do you ever say anything not relating to jestr? Don't say its better just because they use it. "Accurate" numbers are all relative anyway. So many different things can affect your numbers. Be it: humidty, altitude, temperature, correction factor, etc...

Dynos in and of themselves are for bragging rights. Mustang dynos are FOR TUNING, horsepower numbers are just a by-product.