I have the opportunity to have my car put on a dyno machine here in about two weeks. i have never done this before so i was wondering if there was any information i need or anything speical i should do to the car before hand. I plan on in the near future, putting on a smaller pulley and changing the intake and stuff like that. kinda do a before and after. i do plan on a video of the test and put in the motion section. and also i wondering how much it should cost, i was told it would be $85 didn't think that was too bad. thanks for the help.

$85 is on the high side of average with out A:F, low to mid end with A:F.
If you are close to due for an oil change do it first. keep an eye on temps and let it cool if needed between pulls.

Have fun, the sound at WOT in an enclosed space is wicked.