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Originally Posted by longassname
that equation could actually use a little revision.
230 hp at 95% ve
(14.7 + 7)14.7 = 147.5% ve
147.6/95 = 155.4% increase at 5600 rpms
new peak at 6500 rpms
6500/5600 = 1.16
1.55 * 1.16 * 230 = 413.5 hp at 6500 rpms
let's not get caught up in playing with numbers though. It is what it is and we'll measure it soon enough.
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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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