Guys after taking my truck in for several dyno pulls and seeing some others post their results something is starting to bother me. Dont get me wrong I love my truck and the power seems just fine, after all its not a sports car.

But, on the average Duramaxes pull about 240rwhp(rear wheel horse power), and from what I see PSD's pull about 210. Now you do the math, PSD is rated at what? 250hp! The 30 hp between the two at the wheels does not add up, seems like the Dmax is really only making about 280.

Then there is the most important number the torque. 520lb's is what the Dmax is rated at but the dyno results only show about 440 or so, and a PSD pulls about 470!!! How can this be? PSD is rated at less torque.

Just curious if anyone finds that my results are flawed please let me know.