Old Nov 21, 2011 | 08:47 AM
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stevieturbo
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From: Norn Iron
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Originally Posted by scoooby slayer
im trying to figure out roughly how much hp per psi i will get going na to twin turbo.

5500 cc engine will remain stock at 10.5 cr
fit 2 t3 ar .48 turbos rated at about 300 hp each
engine is about 300 hp currently

im just curious how much hp i could get per psi assuming engine stays stock

just thinking on 100 hp of boost instead of 100 hp of nos and no lag as cr remains the same.

i was thinking i could run 5 psi without needing an intercooler and engine should take it, but what power woold be achieved roughly ?
Isnt as simple as that. And I would say that those turbos are a bit small unless you're operating over a very small rpm range.

5psi should be ok with no intercooler, obviously will good control over ign timing and fuelling though

If you worked on the theory that 1bar ie atmospheric allows 300bhp, then in theory 2 bar could allow 600bhp ( in that ideal world ), but obviously it wont. I cant see 5psi giving you another 100bhp though. And doing such a conversion for anything less would be a total waste of time.

You could probably get the extra 100bhp through n/a tuning
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