Originally Posted by AshWilliams (Post 264045)

At one point I also drank the Kool-Aid and had filters in every car and truck I owned.

I can attest that if you have a poorly designed air box on an agricultural vehicle (like an HD truck) a better flowing filter may add a bit of power. 0.5% of 400 HP is still a number, albeit infinitely small.

But my experience is with the filters is that they get clogged with dust. On a paper filter the loose particulate crap falls off the filter surface and into the air box, but the oil filters just mop it all up. While no one in their right mind would off-road an FR-S, dusty roads, wildfires, and gravel/salt spray clogged my K&N's a lot faster.

And even if I was super careful cleaning them, I always found a bit of oil downstream from the filter in the intake.

Originally Posted by xcelir8brz (Post 260858)

I've owned enough cars to advise that what I posted is accurate. Nowhere did I mention any HP increase. I doubt there was any.

Originally Posted by mark7s4 (Post 260169)

Magic filter indeed! Didn't Perrin dyno the car with and without a filter and there was no difference? lol

Originally Posted by Boosted2.0 (Post 264450)

We did - it picked up 1 1/2 HP when we removed the filter entirely.

Originally Posted by spiller (Post 262480)

in most cases the stock air box with a good filter and some cold air feed is the best solution as opposed to an open pod type filter that a lot of tuners opt for.

Originally Posted by 7thgear (Post 264372)

are you a dumbass or just pretending to be?

if there is no increase in power, that means there is no increase in air intake, which means none of your claims are accurate, which means you just wasted 50 dollars.

what's more, you feel it necessary to coverup your useless splurge by posting the same K&N rhetoric that they have on the back of their products hoping that if more people make the same mistake then somehow it would all end up being a positive thing.

:bonk:

K&N Oil filters are hype, i used to have one, after 1 hour of driving i forgot i even put it there, never again.

You're better off taking a 50 dollar bill and just taping it to your air box, it will have the same effect.