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Ram air?

On Tue, 17 Jun 1997, DeWitt Harrison wrote:

> absolute temperature are omitted. They do succeed in making a good
> point, though. It is noted that any benefit from "ram air" intake
> ducting comes from bringing cool air into the engine, not from
> increased inlet pressure. They cite standard aftermarket air filters for

The temperature thing is certainly important, but feeding the engine air 
at 1psig is definitely better than at 0psig unless there are other 
mitigating factors.   That would mean for example that my turbo only has 
to pump the air 13psi delta instead of 14psi delta.   That menas the 
turbo will spool up faster.  I think that might mean too, that the turbo 
couild run at 15 psig, adn be at the smae efficiency as it was before at 

> the VR6 which draw under hood air that is easily 100 deg.F hotter
> than outside air. Not cool.

Definitely not cool.

Graydon D. Stuckey