K&N Air Filter,who put one in.and is ther any difference - Drive Accord Honda Forums | radio-pro.ru
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post #1 of 21 Old 08-01-2015, 09:32 AM Thread Starter
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K&N Air Filter,who put one in.and is ther any difference

Did the K&N help in any way.....gas. performance ??

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post #2 of 21 Old 08-01-2015, 11:11 AM
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I did. I also drilled a few small holes in my OEM air box to help with rapid air intake during WOT runs. (I bought a second OEM box for $25 and drilled that one. I still have my “un-drilled” OEM box.) Call it a semi-SRI. Yes I believed it helped.


This video above is part of a series of comparative dyno tests on several aftermarket intakes. The car was the 2013 Scion FR-S. On that engine, which isn’t too much different from your 2.4-liter I4, the K&N drop-in made an additional 5.7 hp. What was interesting was the drop-in made essentially the same amount of extra power as all the SRIs. In fact some SRIs produced less power. The drop-in won’t sound as good as an SRI, but will produce essentially as much extra power.

This video validated the claim that most OEM intakes are very well designed. OEM systems are not restrictive. What is restrictive is the air filter. This video also validated the claim that 95% of the hp gains result from a less restrictive air filter, whether it be a drop-in panel or a cone filter, they’re all made of the same stuff. In counter balance, they do NOT filter as well. All of these lower resistance filters will allow more airborne crap to enter the engine. You never get something for nothing.

In my case, winter is the only time I really worry about dirty air – primarily when I drive through thick clouds of dried salt dust on the highway after a snow storm. For winter, I just drop my OEM paper-filter back in the air box. It takes literally three minutes. In spring I go back to the K&N. For ≈$50, I will argue a K&N drop-in is the best performance upgrade you can do for the money. A $250+ "big name" SRI won't produce more power. It will just sound better.

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post #3 of 21 Old 08-01-2015, 11:23 AM
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I purchased the


from Amazon for $50 really hard to say if I gained any HP or improved MPG because I did notice a slight increase in MPG (1-2). It really comes down to how hard you push the car in which case I have been pushing the car far less than I was when I first purchased it. I would say your better off purchasing the K&N intake for $220 off Amazon if you really want to see immediate results to MPG.


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post #4 of 21 Old 08-23-2015, 03:09 PM
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Dumb experiment – well maybe not…. I figured this thread is a good place to discuss it without high jacking it or starting yet another air filter thread.

I cleaned my K&N drop-in filter today. I also have my original OEM (redundant?) paper filter. In my house we have floor supply registers for the A/C. As an experiment I placed each filter over the same floor supply (one at a time obviously) just to see if I could feel any difference in air flow.

First, they both blocked a lot of air. Compared to what came out of the supply unblocked, both filters were very restrictive. But when I placed my hand over each filter the K&N filter felt like it let a lot more air through than the paper filter. I have no formal way to measure the CFM, but it was noticeably more and demonstrated to me that there is a significant difference in airflow for the two types of filters. Based on this test, paper filters flow nowhere near as well as the K&N drop-in filters - not even close.

If anyone else has a drop-in and a paper filter could they possibly perform the same test? It’s real easy! I’d really like to hear other’s observations. Thanks.

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post #5 of 21 Old 08-23-2015, 06:44 PM
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Is the K&N still an "oiled" filter or is it dry now?

Does any one else make a dry hi flow drop in filter for our 4 cyl?
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post #6 of 21 Old 11-10-2015, 02:03 AM
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Is the K&N still an "oiled" filter or is it dry now?

Does any one else make a dry hi flow drop in filter for our 4 cyl?

AFE has a dry filter in the works.I saw it on their website.And will the 2015 2.4 K&N fit the 2016 Accord 2.4?

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post #7 of 21 Old 11-10-2015, 02:25 PM
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AFE has a dry filter in the works.I saw it on their website.And will the 2015 2.4 K&N fit the 2016 Accord 2.4?
That's what I have installed on my 12 exlv6 and I love it. Can definitely feel the difference when you step on the gas.

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post #8 of 21 Old 11-10-2015, 08:39 PM
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I have the drop in filter. It made a slight change in the intake sound whereby you can hear the VTEC crossover better. That's probably where the extra 3-4 crankshaft hp is gained, all at the top. Not going to realistically feel any of it in day to day driving; temperature fluctuations through the day will alter power more.

It's better paired when you at least have Ktuner and preferably a Jpipe to go with it. I only have Ktuner so I can't say how it would overall be with a stock filter, but again, I doubt I would notice the seat of pants difference.

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post #9 of 21 Old 11-10-2015, 09:21 PM
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Dumb experiment – I cleaned my K&N drop-in filter today.
Let me guess....you FAILED to follow K&N's recommendation regarding the cleaning/oiling interval. If you did, you are NOT alone. Millions of ricers and bench racers do this every single day.

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post #10 of 21 Old 11-10-2015, 10:03 PM
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Let me guess....you FAILED to follow K&N's recommendation regarding the cleaning/oiling interval. If you did, you are NOT alone. Millions of ricers and bench racers do this every single day.
Let me guess...you failed to read the entire post LOL.

BaldEagle's "dumb experiment" was his testing for flow via placing the filters in front of a fan pretty much. He did not overdrench his filter with oil.


I have the drop in. Even if it does give you the advertised hp gain your're not going to feel it. It does give you slightly increased induction noise above 4k rpm on the I4 cvt. Best of all its not $250

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post #11 of 21 Old 11-11-2015, 04:33 AM
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Let me guess....you FAILED to follow K&N's recommendation regarding the cleaning/oiling interval. If you did, you are NOT alone. Millions of ricers and bench racers do this every single day.
Not sure where you are going with this but it was not a “formal” filter cleaning recommended at 50,000 miles. By cleaning my filter, I simply popped out the dry particulate matter (dried bugs, tiny leaf particles, dandelion seeds, sand, etc.) caught in the gauze, gave it a quick spray with water in the kitchen sink and let it dry. I did not soap the filter or scrub/brush the filter to risk removing any oil. I did not reapply any oil.

To point, even if I did over oil the filter it still let more air pass through it than my nearly-new OEM filter. And if you believe the video tests shown in post #2, that would support the results that a drop-in low-resistance air filter can add 5+hp over a stock OEM air filter.

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post #12 of 21 Old 11-11-2015, 04:54 AM
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I put one in. Yes, there is a difference in performance. No, it's not just in my head. The engine breathes better. That is compared to the green paper filter I had in, which wasn't OEM.

Not sure about the MPGs. If there's a slight 1-2 MPGs increase, you'd hardly be able to tell unless you do some advanced calculations.

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post #13 of 21 Old 11-19-2015, 04:07 PM
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I installed one for like a day and returned it. Car ran like balls with it in. Fuel mileage dropped and no noticeable power or throttle difference. Save your $50 imo
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post #14 of 21 Old 11-22-2015, 08:16 AM
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The oem paper probably filters better and flows better and you don't need to mess with oiling the filter etc.

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post #15 of 21 Old 11-22-2015, 10:41 AM
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The K&N more than likely sacrafices filtration for flow,and at what CFM are they flowing better?Are the higher CFMs these filters flow better at even being seen in 90% of applications?
In boost applications the benifits of a K&N and alike can be had,but in any stock or lightly modded engine nothing is going to beat a OEM paper filter for both filtration AND flow.

There have been plenty of tests done on the matter,here is just one.


With MPGs being more of a concern than ever and manufactures trying to one up oneanother in this asspect for even 1 or 2 MPG,if more MPGs can be had from an oiled filter don't you think ALL manufacturers would be using them and just adding the cleaning of the filter to the maintanance schedule?


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