Reviews of K&N parts For Business

Also the K&N oil filter is superior to HD’s despite the recent upgrade. The K&N has a better flow.

Put a K&N cleanable air filter in long ago I’m now at around 80k mileage and most likely going to sell my 2016 wrx before 100k.

K&N HP1002 because it has a hex on the end that makes taking it off through the wheel well really easy. Don't even have to jack up the car, just remove the rear splash guard.

I actually switched back from a short ram to the stock airbox recently and it completely changed how the car drives — smoother powerband, better MPG, and way better throttle response. I do miss the VTEC sound a little, but performance > noise for me.

Air filter change gets K&N.

K&N also makes a washable cabin air filter, although it’s a b@$&; to clean.

I don’t recommend reusable performance filters since they can alter air flow enough that you end up running a little lean with a turbo charged engine. This is why a lot of turbo charged engines can’t just have a cold air intake slapped on without a tune. This actually occurred with my 08’ Subaru Legacy GT. Stick to a quality standard filter that offers optimal air flow and filtering capability.

Not worth it at all. It’ll allow more dirt in your engine for zero power gain.

KN avoid them they allow to much dirt to pass through, if you want higher quality go AFE Dry Pro.

Reusable K&N filters very marginally improve performance at the cost of allowing more dust and other particles into your engine. OEM paper filters or other reputable ones like WIX do a much better job of actually cleaning the air.