need some help guys. i plan on getting the escort in the 12's soon, but what is the idea compression ration on a turbo motor boosting at 15 to 18 psi? the pistons are custom and they will be sent off soon but i need to get your opinions if i can. as it is, stock CR is 9.6 to one and runs 9 psi. i get about 3 or 4 psi @ 2300 rpms and i expect it to spool faster with the pnp head. whats the best cr to go with, anyone?