[Clark Griswald]

I'll let the sour and bitter skeptics skowl about 2hp being less than 1% and beyond the accuracy of the process. My concern is the following statement:

Originally posted by widebody911

One interesting observation was the difference in HP and torque, and how HP went down when the oil cooler fan kicked on, but torque stayed up.

HP and torque are not independant measures. HP is calculated from the torque as follows:

horsepower = rpm x torque / 5252

Dynos measure torque, not HP. HP is calculated as above.

So, the comment about torque remaining the same while HP changed is not possible - unless RPM changed as well. It is entirely possible that RPM changed due to the added load on the alternator and it happened to be on a flat part of the torque curve.

I am anxiously awaiting detailed data.