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Message: <blockquote data-quote="justinschmidt1" data-source="post: 993532" data-attributes="member: 8889">Is that serious?you have a completely different motor than the OP....and do you even know what your talking about to say "go to a new tuner"?  Im assuming not cause if you did you would realize his numbers are perfectly fine for what he is running....dynos are just a tuning tool and can be manipulated, your numbers seem very inflated to me anyway as most HCI 5.0s on 12 psi wouldnt even make numbers like that.   What model procharger is on the car anyway?Sorry but buying a car someone else built doesnt mean you gain knowledge.  PSI is a measure of restriction, its not an indicator for power.  He could be running 10 psi on a bone stock NPI long block and be lucky to break 300 rwhp but on the same token, a well built 4v 4.6 could make 500+ rwhp on 10 psi.</blockquote>