who is going to dyno test at san antonio dyno sometime? ive heard "That's pretty impressive...just a little more than what I would have thought it would do at the rear wheels based on the 505hp rating." and some others were saying that it is a chassis dyno based on the torque and horsepower measured by an absorption dynamometer. Also this was San Antonio Dyno » Blog Archive » San Antonio Dyno Tuning a test that got 2007 Silverado 1236 hp. very impressive![]()