Mike,
The dyno-tune involves a series of runs (pulls) to determine baseline torque and horsepower at various rpm. The technician then adjusts the air-fuel ratio, timing (base, total and advance curve) for peak torque and HP. A graph is printed out to show the results. Below is a link to the shop that we will be using.
http://www.carbconn.com/
Jason,
I'll contact the shop around June when I have some idea as to how many folks are interested. We may be able to get a group discount.