| I have gt2560r turbos. I see 5 psi at 3k and full boost (18psi) just before 4k. My car made 380hp on a mustang dyno on a 100 degree day with ridiculous humidity. I'm having a problem holding boost above 6k, so once i solve the problem I'm expecting well over 400 on a nice day. If I did it again I'd go bigger! : )
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