I was actually thinking about starting a dyno shop at one time. Wrote up a business plan and everything. But it'* just too expensive for me. Here'* some of the other dyno'* in Wisconsin that I've found though:
1. Dynamic Sport Tuning LLC
Madison, WI 53719
2. K&* Fuel Injection
Schofield, WI 54476
3. Maraz Import Service, Inc.
Brookfield, WI 53045
4. Power Test Inc. Dynamometers
Menmonee Falls, WI 53151
5. Test & Measurement Resources Inc.
New Berlin, WI 53151
Not sure if the list is still accurate, but it'* a place to start.