JeepLab Prodigy Install LIVE

[JeepLab]

As Jessee's dyno results show, overall gear ratio does matter on that dyno, the way the dyno run was performed. The results are very different between 3rd and 4th gear. There is no way you can look at those results and conclude that the gear ratio is a non factor.

A difference in axle ratio causes a difference in overall gear ratio essentially just the same way a different transmission gear causes a difference in overal gear ratio. If axle ratio was a non factor, then transmission ratio would also be a non factor. If the overall gear ratio matters, then the entire combination of transmission gear, axle ratio, and tire size all matter.

I said Axle Gear is a non factor. Not transmission gear. The dyno connects to the cpu in the dash and uses the RPM of the engine to correct for the speed of the tumbler

Stock jeeps get dyno'd in 3rd gear because the stock tune hits the speed limiter in 4th.

Modded Jeeps get dyno'd in 4th, as it is closest to 1 to 1 ratio. I have never heard anywere of a jeep getting dyno'd in 5th gear.

Ive been at this a while, and have interviewed and worked with every power mod manufacturer. They all say the same thing.

Dynojet both drum speed and engine speed are measured and used to take out any effects of gear torque multiplication.