Originally posted by Snoopy
what you want to have tuned determines how long you're on the dyno. figure for a basic bolt on car with cams and a vafc, 1-1.5 hrs. remember you have to make a pull, let the car cool down in between runs, make the changes, make another pull, repeat.
good, reputable shops will know what to do.
tips before you go to the dyno
I made 20 pulls adjusting mainly the VAFC. I thought it was a little too many, but did what was needed and let the guy tuning my car who knew what he was doing do it. It took about an hour and a half or so.