Put my XR8 Ute (6000k's) on a dyno today and we did a couple of runs. With a K & N air filter it pulled 190kw at the rear wheels. i think this works out to 255kw at the flywheel, maybe someone can verify that. I didn't have the stock airfilter there to put back on and do a comparison. But I have heard good and bad things about K & N filters, so i wonder.
Also did some runs with a G-tech meter last nite. Best times we got were 6.09 sec 0-100. 14.6 quarter mile at 103.2mph.