The Dynojet response is at the top, my question is at the bottom.

Ross,

The reading (as you call it) will most likely be different because the work performed by the Jeep will different with different rear gears.
Even without changing the rear gear, you can make a run in 3rd and another in 4th and so on and they will show different HP.
But think about what is going on here---
the computer is monitoring the acceleration of the dyno drum, it has no idea what type of vehicle is on it or what gear it is in.
Measuring Rear Wheel HP where the tire touches the drum means any change made before the drum has the potential to change the RWHP .

Above is some theory to ponder.
Please don’t believe everything you read in forums.

Thanks,
Bill


From: ross@jeeplab.com [mailto:ross@jeeplab.com]
Sent: Monday, August 11, 2014 7:59 PM
To: dynotech@dynojet.com
Subject: Dynamometer Tech. Inquiry

Entered on: http://www.dynojet.com/Contact/Dynojet-sales.aspx

Submitted On: 8/11/2014 10:58:33 PM
-----------------------------------------------------------------------------------
Regarding: Model 224x
-----------------------------------------------------------------------------------
Name: ross
Email: ross@jeeplab.com
Country: United States
Comments: Im from JeepLab.com and we are dyno testing a new turbo Jeep Wrangler with a dynojet. The argument in the forum right now is weather or not the axle gear ratio will alter the dynojet's reading. Will 3.21 gearing give a different dyno reading than 4.88 gearing assuming all other variables are the same? Thank you!