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      12-12-2013, 09:44 AM   #225
Jamesons Viggen
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Drives: '98 M Roadster stg 2+ S/C
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Quote:
Originally Posted by tdizzle View Post
And with supporting mods to allow the N54 to get in the 18psi range (Down pipes, appropriate fueling, tune) it will put down around 400whp so about the same as the F80 I'm guessing?

I think the 5.0 Coyote in the GT puts down around 370whp stock and is rated 420hp if I recall (give or take a couple hp) for comparison, but we're expecting the F80 to be underrated, so maybe 390whpish?

N55s are putting down around 270whp while rated at 300 (or 305), so they're not hugely underrated in terms of power, although tq seems to be underrated by a fair amount.
Off the top of my head, I am not sure the stock turbos could run 18psi(at least not on pump gas). My friend with downpipes, Cobb tune set to aggressive, exhaust and FMIC, I think it's about 14.5psi.
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