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Old May 1, 2008 | 08:21 PM
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lynnb
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Default how much power
i have c6 m6 with p1 procharger and borla stingers. car makes 510 rwhp and 447 tq. at 6.5 lbs of boost. I'm going to install kooks 17/8 longtubes with nocatted xpipe and change pulley for 4.5 to 4.0. hopefully 9lbs of boost. and have the tune done by my local performance shop. how much horsepower and tq should i gain?
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Old May 1, 2008 | 08:28 PM
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From: Dallas/Valley Ranch TEXAS!!!
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Originally Posted by lynnb
i have c6 m6 with p1 procharger and borla stingers. car makes 510 rwhp and 447 tq. at 6.5 lbs of boost. I'm going to install kooks 17/8 longtubes with nocatted xpipe and change pulley for 4.5 to 4.0. hopefully 9lbs of boost. and have the tune done by my local performance shop. how much horsepower and tq should i gain?
35-40rwhp for the headers, plus boost may end up back at 6.5 even with the smaller pulley, as the headers will make the system as a whole more efficient... depending on boost about 27-30psi per lb of boost on P1SC'd LS2's...
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Old May 2, 2008 | 08:33 AM
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Originally Posted by Mr.Big
35-40rwhp for the headers, plus boost may end up back at 6.5 even with the smaller pulley, as the headers will make the system as a whole more efficient... depending on boost about 27-30psi per lb of boost on P1SC'd LS2's...

hope to make 570 rwhp
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