I personally have the k&n filter on my 2010 Forester and recently got the reusable cabin filter and have not had any problems.
I have one in both my Forester and wife's Crosstrek. Performance increase? Meh. On my XT it didn't matter, but I did find that the Crosstrek's acceleration from a stop increased nicely. I've had one on my Jeep for over 200k miles with no problems.
I use K&N filters on 3 of my vehicles - my '74 G30 350 V8 Chevy Van tow vehicle, my '93 RX-7, and my F2000 racecar. On the racecar, it is a required spec part required for all F2000 cars using the Zetec engine. In 14 race seasons (~100 races) of use it has caused no issues. My engine builder says my engine always looks good when they get it for a refresh. On the RX-7, it was part of an induction upgrade (the OE intake was very restrictive) and provided a noticeable power increase. It has caused no issues in the ~60K miles it's been in use. On the Chevy van, the OE air cleaner was way too small and restrictive for towing purposes. The K&N provided a significant benefit in gas mileage and power. It has been in use for ~200K miles and has caused no issues. YMMV.
I have a K & N filter in my 2016 cx9, it's been there since about 10k miles, now has 93k miles on it. I feel I picked up about 1 mpg with it and it does feel peppier.
K&N filters are great for the price. Very little gains. In my opinion the engine felt a little more responsive and maybe had a little more top end. But nothing to write home about.
I have them in my bone stock g37s coupe and I like them. I wasn't expecting crazy power with only drop in filters.
I have an OE replacement filter in my GTi. Can I tell a difference? Not much in the GTi
last night everything was all normal, K&N filter in the stock airbox with one side cut out. sounded pretty nice. ive had this setup for a little over 6 Months .. Today i start my car and head off to work as normal. and i notice its being very very quiet (almost stock sounding)
This proves what most people have always said, K&N's don't filter for shit, also FRAMs are no good.
Welp never buying K&N air filters again.
Write your review
Help others - share your experience with this part.
Voted AGAINST engine oil RAVENOL on the rating page
The brake discs Mintex got the first review!
The power steering pump OEM Volvo got the first review!
The brake fluid DIXCEL got the first review!
For tires GISLAVED already 25 reviews.
In the rating best air filter already 5 brands participate!
In the rating best fog lights already 3 brands participate!
In the auto rating windshield for Subaru Outback already 5 brands participate!
In the auto rating battery for Volkswagen Golf already 5 brands participate!
In the auto rating tires for Honda Civic already 15 brands participate!
For oil additives LIQUI MOLY already 25 reviews.
For battery OEM KIA already 25 reviews.
In the rating best cabin filter already 13 brands participate!
Voted AGAINST engine oil RED LINE on the rating page
Voted AGAINST engine oil PENNZOIL on the rating page
