they go boom because of small mistakes and also most are not curiouse about the high compression, big problem for the type-r and big boosted hp for any of the b18c's. go for a n/a h22, or build a turbo low comp. motor. if the b18c's have not blown yet they will eventually. turbo a b18a/b, n/a a b18c1/5. you get better usable power out of them that way. and a h22 will desimate both in either turbo or n/a form, if you can keep it from breaking axels.