i did mine on a dyno at UTI, only got hp numbers cuz tq is based off of timing and we didn't put the sensor around the spark plug wires. it was between 250 and 255 after 3 runs, and all i have is a drop in k&n air filter. it was a climate controlle dyno room to about 75 degrees and like 30% humidity or something. and right beforehand i had unconnected then reconnected the neg battery terminal
i didn't really believe those numbers at first but there were many cars there tested on that same dyno that we had hp numbers on from the factory, and they matched up damn-near perfectly (considering loss to wheels)
the cool thing was i had compaired the stock paper filter with the k&n on a flow bench and got 5 more cfm from the k&n. went from 199 to like 204cfm. not really that much i know but it was cool to do the test myself as opposed to just reading ads and listening to commercial jargen