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Old 02-22-2011, 09:23 PM   #7 (permalink)
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Moostange - '07 Ford Mustang GT
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Originally Posted by mspropst View Post
[*] Second, bigger turbo = more compression.
The higher dynamic compression from a bigger turbo would be the result of stuffing more air in there. The physical compression stroke wouldn't change. Stuffing more air in means stuffing more fuel in to keep the ratio correct. More fuel and more air means more power, but you really don't need any more, as you have stated.

A bigger turbo also kicks in later, which move the spot of best efficiency around. You would have to look at where it ends up, and where the loads are that you drive at, to decide if it is a better choice. A smaller turbo might end up being better for fuel efficiency, who knows.
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