New Hood Mod! NACA Ducts!

[Ldub]

Cold air= power. Cold fresh air is good, but obviously too much water is bad. My truck makes noticably more power on really cold days.

I really don't think you can get up enough air pressure for any signifigant ram air effect, but the cold air will help.

John C.

I'm right there with ya John...to a point, that point being around zero, or a little above.
There's a reason older cars had heat risers ducting warm air from around the exhaust manifold up to the intake, same reason our throttle body is plumbed into the cooling system.
In severe cold, warming the intake (combustion) air a bit makes combustion happen more easily.
On mine, I've plumbed a bypass around the throttle body (using ball valves) that shuts off the coolant during the above freezing months.
My two cents.
SilverBullet, Sorry for the thread-jack.