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Old 12-08-2012, 07:28 PM   #1
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K&N Filter

Hello Guys,

I bought a 2013 Taco Double Cab v6 and I'm in the process of trying to find a simple way to make her breath easier. I'm not planning on Off roading or pressing the pedal to the metal on this taco . K&N claims this filter increases HP. Would you be kind to share your experiences with it, the pros/cons of this filter, and whether or not it is worth the money? Thanks in advance for any feedback.

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Old 12-08-2012, 07:52 PM   #2
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It does not increase HP.
It does not filter as well as the stock filter.
It will cause elevated silica levels in the crankcase oil and cause cylinder scoring.
It will cause more frequent fouling of the MAF due to oily dirt passing through the mesh requiring more frequent cleaning of the MAF (something that needs to be done on a stock system, pretty much, never).
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Old 12-09-2012, 02:39 PM   #3
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Dont mess up instal. will cause leaks and other problems, other than that. mine has been very while and it breaths alot better!
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Old 12-09-2012, 03:22 PM   #4
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Quote:
Originally Posted by Schuylerville View Post
and it breaths alot better!
And you scientifically measured this in what way?

The stock intake can flow more air than any normally-aspirated engine smaller than 8 litres can use.
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Old 12-09-2012, 08:32 PM   #5
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My opinions it does breath better but it has a cost , dirty maf (almost guaranteed), I would look for other options.
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Old 12-09-2012, 08:40 PM   #6
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Quote:
Originally Posted by Dcpsychobilly View Post
My opinions it does breath better but it has a cost , dirty maf (almost guaranteed), I would look for other options.
It's not that it won't flow better on a flowbench, but it comes down to the point of "how much do you need?"

If the engine can only draw 600cfm at 6000rpm, and the stock intake can flow 900cfm, there's no gains in replacing it with an intake that can flow 1200cfm.

The most restrictive point in the intake is the throttle body.
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Old 12-09-2012, 08:53 PM   #7
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k&n claims that the maf being contaminated by their oil is a myth. I don't know it i believe it or not but here is their statement on maf sensors.

http://www.knfilters.com/MAF/massair.htm

As for gains in hp, I wouldn't expect much.
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Old 12-09-2012, 08:57 PM   #8
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I think rich is saying that those things can happen . If you charge it correctly they probably won't . I don't know anyone who has had a problem running a K&N . Just 2nd gen tacomas don't get any added horsepower from it .
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Old 12-09-2012, 09:03 PM   #9
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I would just go with a TRD CAI. Or if you want the look of your filter showing then go with an AFE filter and not K&N. AFE makes the TRD filter. I have an AFE CAI and I love it. It doesn't give me much better mpg but my truck sounds awesome at higher rpm's and it "feels" quicker at higher rpm's too but idk the facts on that.
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Old 12-09-2012, 09:03 PM   #10
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Ya... If the filter is over oiled, the oil will coat the MAF.
Once that happens, the fine dust that the filter allows to pass through will stick to it and foul the MAF.

K&N filters were designed for offroad racing. They were not designed to support an engine that is intended to run 300,000 miles and 15 years. They were designed to keep damaging debris out of an engine that is going to be rebuilt every 500-1000 miles.


We've got two issues here. The filter media itself, and the CAI.
The biggest problem with the system, IMHO, is the media.
The CAI, installed properly, will flow well, though it will tend to draw more hot air from under the hood, where the stock intake draws from the fender, which gets it's air from in front of the radiator... it's already a cold air intake.

Benefits? Pretty much zilch.
The OEM filter is less than $20, change it once a year and even that's overkill (it's due every 60k, but offroad driving will foul it more quickly).
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