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Message: <blockquote data-quote="NERD" data-source="post: 549896" data-attributes="member: 8956">My buddies got a PI vortech car that was making 10lbs with an S-trim and he upgraded to a T-trim, got a Power Pipe and upgraded to a 10% overdrive crank. Our question is, How much boost will his boost go up?We've heard a few different thing. Since the CFM of the S/C is increasing by 200cfm, wouldn't that increase boost? So the by that logic boost would have to increase. 1000 CFM vs 1200 CFMI would give +3-4lbs for the 10% overdrive crank pulley and 2-3 for the boost pipe.Any thoughts? Experience preferred please anyone can guess.He's worried about lifting the heads from too much boost.</blockquote>