Does a KandN air filter make a difference for real?
If you've spent any time hanging out in car forums or chatting with gearheads, you've probably wondered if does a K&N air filter make a difference or if it's just clever marketing in a flashy box. It's one of those upgrades that almost every car owner considers at some point because it's relatively cheap, easy to install, and promises some pretty enticing benefits. We've all seen the claims: more horsepower, better gas mileage, and a filter that lasts as long as the car itself. But does it actually hold up when you're out on the road, or are you just paying for a sticker to put on your airbox? ...