Hello,
Dan, that's why I want to go to the Dynapack setup. That seems to be the preferred one on NAM. I feel my results on that would be more comparative.
I'm a bit late to this. But I see you're in Newport News. Custom Car Care in Yorktown (near 17 and Victory Blvd) has a Dynapack. Speak to Brady when you call. I like the Dynapack, not because it may or may not read optimistically, but because the results are repeatable and are not swayed by tire pressure, tiedown strap tension, etc. I'm very confident each mod I've dyno tested provided measurable results due to the consistency of the Dynapack. I even found a mod that was NOT effective and dyno-proved that, too.

Take Care,
Scott