Not worth it at all. It’ll allow more dirt in your engine for zero power gain.
Pros: zero power gain
Cons: allow more dirt
Reviews of K&N air filter
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I’ve used KN filters in many cars. I had one in my WRX for 13 years. It’s a great filter but the filtration isn’t as good as normal filters. About every 15-20,000 miles you need to clean it, that means you won’t be able to drive your car for like 12 hours while your filter dries. Then you need to re-oil it and make sure you don’t use too much or it will fuck in your sensors.
Pros: great filter
Cons: filtration isn’t as good
KN avoid them they allow to much dirt to pass through, if you want higher quality go AFE Dry Pro.
Pros: higher quality AFE Dry Pro
Cons: allow too much dirt
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.
Pros: marginally improve performance
Cons: allowing more dust
I would recommend a K&N cloth filter. They can be cleaned and re-oiled about every 50K miles. They never need to be replaced.
Pros: cleaned and re-oiled
Cons: needs cleaning
Mileage: 50000 km
I run K&N's on my Harley and the blower on my SBC. No issues.
Pros: no issues
The k&n gets you nothing except for letting a lot of dirt through if you don’t oil it regularly.
Cons: poor filtration, lets dirt through
K&N air filter is rated as the worst thing you can put on your vehicle. We tested different 'cold' air intakes when I went to Nascar Tech and K&N will take away around 8 horsepower.
Cons: reduces horsepower, worst filter
I replaced the air filter with a higher quality paper k&n, but thats it for anything under the hood.
Pros: higher quality paper
Vehicle:
Jeep Wrangler
Mileage: 5000 km
a k&n air filter, it changes the car a fair bit and gives it some new life too
Pros: improves performance, new life
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