But to answer the initial question... Boost is boost and the more boost you put on an already high compression ratio the most dangerous it gets but give us an idea of what is a low CR for you because IMO 9:1 is a realllllly really low CR and if you read modified mag, they tuned an S2k with I dont remember how much boost ( I think its over 20 or around that wich is a lot) they used 9:1 CR forged pistons and I guess you are not gonna make a 600 hp car of your honda so 10-11 :1 CR is low enough to handle most of the usual boost we like! hope it helped.. for more info try something on turbo magazine web site they might have a good idea