Quote Originally Posted by David88vert View Post
Wrong again. Most knowledgeable tuners do their startup, idle, and low load and partial throttle tuning before they make the car owner put it on the dyno at $150/hr.

Many well-known tuners offer both options of tuning on the dyno or street. Almost all of them did before the Mustang and Dyno Dynamics load-bearing dyno gained popularity. Dynojet 248s (the most popular dyno) are inertia dynos, so partial throttle tuning, and fine tuning are usually done on the street when using them.
Yes David is correct. When I had the tuner in my sig set me up a tune, I had to do idle data logs, "step test" (driving in 2nd gear from 1500-4000RPM and holding 30 sec at each 500RPM interval) data logs, then got it revised for a WOT pull. I'm taking it down to his dyno in a week or two for fine tuning. It has 20* timing right now, but will most likely bump it to 22-23 degrees...