Air filter K&N or Fram

K&N Air filter

I've had one for years and no issues. Just oil it correctly. Also, watch engineering explained video on it and it does add some power. Not much. And I don't have any mpg gains.

Pros: add some power
Cons: no mpg gains
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K&N Air filter
SmittyinTenn
  • Visible dirt:
Rating 5.0

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
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K&N Air 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
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K&N Air filter

The K&N have cleaning kits for there's with an oil you reapply, but the steps take time for it to dry

Cons: cleaning takes time
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K&N Air filter
3PoundsOfFlax
  • Power:
  • Visible dirt:
Rating 2.0

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
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K&N Air filter
No_Leather_9387
  • Power:
  • Throttle response:
Rating 0.5

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
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