compression is pretty high but with the right equipment and right tuner you can run boost on any compression. its just easier with lower compression. i have a friend that runs an Eclipse and he actually raised the compression. built the block bullet proof. and is running 30lbs along with a 150shot. its all in the tuning. the thing made 450hp on 20lbs. if you go lower compression it will take away power. say you run 8lbs on 10:1cr. it will take 10-11 lbs to equal the power on 8.5:1cr. if you have enough fuel anything is possible. tuning is the key

but other than that. i'm sick of answering these questions. show me the money or something that you have then i respond with everything in detail. or you can just hit that neat little search button up there. its free

EIDT : i didnt mean "show me the money" as in paying me. i meant it as in people just automatically decide "yeah i'm gonna fully build an H22 and turbo it" and think they can do it for $2000. unless you wanna spend $10,000 dont worry about it and just build your way up