I've removed the first baffle, drilled three 1/2" holes in the second. Nice sound, but after dinking with carbs for several months now, the sound has improved to a nice throaty rumble that I really like. My '03 America setup: no snorkels, UNI, drilled airbox/baffle partially out, TBS +1, 132/45. (fyi...side gap experiment coming up!). I've never heard thunderbike, so can't comment. My scoot gets me to the speed limit quickly and quite nicely with no complaints from me or cages around me! One of these days I going to get a real dyno to compare to butt dyno.
