06 shee ,herrjugs hillshooter port , shearer out frames , chariot head 18cc ,RS plate +4 , dyna-tek cdi #1 set , 35mm pwk's 158main , k+n filters , magic racing reed cages w/boyesen's ,hd usa +2 +1 5800i kit chromie's , quicksand motorsports +6 chrome swinger , 21x10x8 paddle xtreme's , 12-44 gears , oh and a sweet boost bottle , and some puffy grips , ya and a pirate flag , umm and a trail tech computer,cool right.
so i have big dune ported stock cylinders running 19cc domes but only pushing 130 psi. if i bump up to 17 or 18 cc what would my new comp. psi be. is there a cutoff psi for 91 oct fuel ?
any help would be appreciated