K&N Filter - Page 2 - Toyota RAV4 Forums
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#11 (permalink) Old 05-16-2009, 07:29 PM
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Re: K&N Filter

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Originally Posted by 38ffems
I am getting a 2003 Rav4, today actually. I am looking to maybe give it a slight boost in performance and with any luck even gain a little MPG. Has anyone used the KandN replacement filter and is it worth the extra money?
I have a K&N replacement filter that drops in the regular filter box, I can tell you that i don't notice any difference
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#12 (permalink) Old 05-16-2009, 08:07 PM
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The drop in K&N filter are base on the best cleaning filter for OEM. Regarding performance, you can feel an improvement on the highway, but that is about it. After 4,500RPM you can feel the engine pulling more.
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#13 (permalink) Old 07-08-2011, 03:52 PM
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So I have a brand new 2011 3.5l V6 4x4 with 494 miles on it, should I spend the $40 on the drop in K&N filter?
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#14 (permalink) Old 07-09-2011, 10:32 PM
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Quote:
Originally Posted by jawkDNA View Post
So I have a brand new 2011 3.5l V6 4x4 with 494 miles on it, should I spend the $40 on the drop in K&N filter?
Probably save you money in the long run, however you will have to clean and re-oil it occasionally yo'self. If you don't mind that, sure. Any performance/fuel mileage gain is barley noticeable in my experience with my 4 cyl.
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#15 (permalink) Old 07-12-2011, 07:12 PM
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The ONLY advantage to a drop in K&N is that you will never have to buy another filter. They do allow more dirt to pass through and do require cleaning. Any performance gains are purely imagined. I started using K&N filters so long ago that I had to import them from England as that was the only way to get them. Are they worth it? In my opinion absolutely not. Stick with paper and be done with it.

A cold air setup or short ram with a K&N cone filter is a different animal entirely and may or may not be worth the cost depending on the application but usually aren't. There can be performance gains but they are quite small and still have the same disadvantages of the drop in.

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#16 (permalink) Old 07-13-2011, 12:55 AM
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Maybe we should think twice about using K&N filters:

Duramax Air Filter Testing * - Diesel Bombers

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#17 (permalink) Old 07-29-2011, 04:50 PM
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Wow. I got a k&n for long term cost savings but it was expensive. Guess getting a case of what ever is cheapest from some where like rock auto would have been better in hind site. Especially since on the 2.4L 2azfe engine the stock air box is rather large and not restrictive.
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#18 (permalink) Old 07-29-2011, 04:57 PM
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Wow. I got a k&n for long term cost savings but it was expensive. Guess getting a case of what ever is cheapest from some where like rock auto would have been better in hind site. Especially since on the 2.4L 2azfe engine the stock air box is rather large and not restrictive.
What do you mean by expensive, I found one for like $37

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#19 (permalink) Old 07-29-2011, 08:28 PM
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i've used k&n filters for many years. i installed one in my RAV4 @ 800 miles, cost me $42. so far i have seen a slight improvement in the ave fuel reading of 1 mpg on this tank, with 160 miles driven so far.
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#20 (permalink) Old 08-26-2011, 01:01 AM
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We're always looking for ways to "improve" the car b/c the mod bug hit us and we can't stop messing with our rides. As much as we want the K&N air filter to work and want to talk ourselves into, my opinion is that the only reason to get it is to save money on having to buy non-reusable filters. Since K&N's are cleanable, just clean over and over again. In addition to the $45 filter, you'll need the $12-14 cleaning kit of course. So you do the math to figure out when you start "saving" money.

The sound is cool and maybe there's increased efficiency. Not sure. As for oil getting into the MAF, it hasn't really been proven but there are theories. K&N took the effort to show a video of how mass amounts of oil can get into the MAF and still not cause a problem - not to suggest that the K&N necessarily does that.

For more in depth info though, I'd recommend looking at other forums that are more heavily used by tuners. There isn't much traffic and technical knowledge here is limited.

Back in anticipation of owning a '14 Rav4 after selling my '02 in 2007. Looking forward to being active again in the threads.

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