You know, one guy with an 05+ and a tactrix cable could solve this in an afternoon.
Log MAFv, Massflow, Load, MRP, and RPM without the TBS. Install TBS and make the same logging run again. If all those variables didn't go up (MAFv, Massflow, and Load are really the same thing, but it's nice to have the computer spit them out in different "views" for you), then the TBS doesn't work.
There's no good science behind the TBS working on our cars. More than that, if the TBS actually worked like the people who champion them claim, it would make our cars WORSE not better.
Hell, I'll throw the gauntlet down right now. Put a TBS in my hand and I'll give the world concrete results within 24 hours and even send the TBS back where it came from so no one's out a part.