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Old 11-23-2006, 12:44 AM   #9
rnoswal
Lexus & 550's
 
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Join Date: Apr 2005
Location: Bossier City LA
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What he said is true about the stock manifold, but it is weird that Toyota built it that way but made the intake manifold valve open at around 4000 rpms. Just when you start making some high end power, the exhaust restricts it, then it falls flat on its face. I guess it depends on your goals for driving on the street, everyday driver or performance. There is always a trade off.

Russ
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