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Old 03-12-2006, 11:10 PM
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longassname longassname is offline
Just some dude.
 
Join Date: Sep 2002
Location: Miami, FL
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Significant Technical Input
that's what you aren't getting conceptually...this is a positive displacement blower. The power plot of an engine with a positive displacement blower is not the factory plot raised; it is a 45 degree angle line. The volumetric efficiency of the engine is being replaced. Your peak rpm is your peak power.








Quote:
Originally Posted by mbtoloczko
Common, how can you expect me to not reply to this? Why would boost change the peak power rpm? Are you doing cams too? If not, I'd expect the peak power to at almost the exact same rpm as stock. Here's a dyno plot showing the result of a turbo kit on an Impreza 2.5 RS (factory non-turbo, 10:1 compression ratio). Peak power is actually at slightly lower rpm. My bet is still ~320 bhp (at 7 psi boost).
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