Originally Posted by The_Nuke
Whether or not a K&N filter is worse at filtering harmful particles out of the air flowing through it will be debated and argued about until the end of time. We will never all come to an agreement on that issue, one way or the other, I'm afraid.
But on the question of whether the K&N filter adds HP, I honestly do not see how anyone can deny that. I mean, come on, it's clear as day!
In fact, the proof literally falls out of the box every time a new one is purchased and opened up in preparation for installation onto the engine.
The only people who should be skeptical of its power adding ability are those who are new to automotive DIYing, uneducated on the sayings of the Old Timers, or (likely) both.
So in the interest of putting this to bed once and for all, I'll spell it out for those who have yet to connect the dots:
Claim: running a K&N air filter adds power to the vehicle's engine on which it's installed.
Verdict: Confirmed!
Proof: Each new filter comes with a nice little "K&N" sticker that can be affixed just about anywhere on the host vehicle to advertise the fact that the car is non-stock now by virtue of having more HP than it did in stock form. And as we all know, each automotive-themed sticker you stick on your car like that automatically adds 5 HP & 3 TQ.
So you see, as long as the purchaser of a new K&N filter does go ahead and use the K&N sticker that comes in the box with the new air filter, the vehicle on which the air filter is run WILL have at least 5 extra HP and 3 extra TQ than it did before installation.
There you go, there's the indisputable PROOF!! 🤓
Crap, no sticker on mine so not getting the extra boost from my Beijing Booster/Hiroshima Hairdryer.