found this

[AU RSX-S]

http://www.cybernationmotorsports.com/

[1.8t]

Stock RSX engine on 12psi........your engine would look like this face :shock: after a year or two. 7lbs seems acceptable, but then you still are forcing air into an engine not ment for it.......be interesting to see how long those engines last with the boost. And FWIW, I think you would lose more than 30whp with a 5psi decrease in boost. 303whp@12psi and 275whp@7psi.....but I guess one must wait for multiple independant dynos