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Message: <blockquote data-quote="whitelightning" data-source="post: 1098354" data-attributes="member: 16897"><p>Thanks Froush, I think for simplicity cuz this is just going to be my street car I'm going with a pretty much stock 2004 PI motor from MMR. The stock Compression on an 04 is 9.4:1. Here in CA a big limiting factor is the 91 octane. I have talked to my tuner and the builder and it seems about 12-14lbs boost is the limit with the 91 and with that compression the new forged (but regular crank) motor will do fine with that amount of boost. Either way I'm sure I'll be happy with it, its more power than I got now on a pretty much stock 96 NPI motor.</p></blockquote><p></p>