this is my first rotary engine and i gotta say i love the performace! but a little more wouldnt hurt! so my question... how much can i boost it with a turbo and not hurt the engine? my old car had a turbo and i was pushing 8psi on stock engine but with a rotary can it handle more? :scratchhe

Try looking through this section...

http://www.rx8club.com/forumdisplay.php?f=93

i think the stock boot is fine. mazda chose a high-quality boot...no need for replacement imho