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PKRWUD · 02-09-2002, 05:46 PM

FWIW, my F-150 (4.9L / 5spd / speed density) picked up an enormous amount of power, from off idle through the entire rpm band, with the addition of a K&N FIPK. The idea of better flow/cooler air mods not benefitting a speed density vehicle has no merit. The trick is to keep things equal. When I added a cat back system to the truck, I felt an even larger increase in power, but that was largely due to the fact that the free flowing exhaust complimented the free flowing air intake. Speed density is actually pretty killer, when you take the time to understand it.

Take care,
-Chris

02-09-2002, 05:46 PM	#13
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	FWIW, my F-150 (4.9L / 5spd / speed density) picked up an enormous amount of power, from off idle through the entire rpm band, with the addition of a K&N FIPK. The idea of better flow/cooler air mods not benefitting a speed density vehicle has no merit. The trick is to keep things equal. When I added a cat back system to the truck, I felt an even larger increase in power, but that was largely due to the fact that the free flowing exhaust complimented the free flowing air intake. Speed density is actually pretty killer, when you take the time to understand it. Take care, -Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!