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2011-2014 Mustang Talk Forum

2011-2014 Talk | 2011-2014 GT | 2011-2014 V6 | 2005-2010 Talk | 2005-2010 GT | 2005-2010 V6 | Shelby GT500 | Mustang Tech 
 

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Unread 01-17-2013   #1 (permalink)
code rz gt is offline Apprentice


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Default K & N drop in air filter

Is the K & N drop in air filter worth the money? Does it offer any performance or mpg. gains to be had by using this filter as opposed to a stock air filter? I don 't want to go the CAI route without a tune, and I 'm not going to tune and put my warranty in jeopardy. I don 't race the car, but I do engage in some highly spirited driving now and then.
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Unread 01-17-2013   #2 (permalink)
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It has less surface area than the stock paper element. I have a K&N, and I didn't notice any benefit from it at all.
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Unread 01-17-2013   #3 (permalink)
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more convenient but you wont get any gains.
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Unread 01-17-2013   #4 (permalink)
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I might've picked up 1 mpg, the main benefit from a K&N is that you can wash and reuse it for many years.
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Unread 01-17-2013   #5 (permalink)
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Actually, you might loose HP.

SVTPerformance 2012 GT : K&N Replacement Filter Test - SVTPerformance
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Unread 01-17-2013   #6 (permalink)
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My service advisor advised me against the K&N. Says the oil on the filter has a tendency to contact the sensor connected to the air box. Check eng light comes on due to the K&N and so much for my warranty. Feel free to share your thoughts on this. I don't know this to be fact. It's just what he told me.
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Unread 01-17-2013   #7 (permalink)
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This has been discussed on here a few times and is very debatable. I had the the K&N in the car for about 6 months and didn't see any gains what so ever. I put the paper filter back in, and the car seems to run better. I would suggest putting your money into your tune. Good luck with what ever you decide.
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Unread 01-17-2013   #8 (permalink)
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Keep the stock filter!
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Unread 01-18-2013   #9 (permalink)
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Wow, I'm shocked by this.

I'm running a K&N drop in now.

Guess I'll run past a dealership and pick-up a factory filter today.

Was that a 4HP loss I saw in that link? Daaaaayum!!
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Unread 01-18-2013   #10 (permalink)
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Quote:
Originally Posted by glock22357 View Post
Wow, I'm shocked by this.

I'm running a K&N drop in now.

Guess I'll run past a dealership and pick-up a factory filter today.

Was that a 4HP loss I saw in that link? Daaaaayum!!
It's actually Tq that is lost, which is worse IMO. It's within the margin of error but the K&N shows less Tq all 3 runs compared to stock. A good CAI is the right answer for these cars, not a drop in.
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Unread 01-18-2013   #11 (permalink)
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Performance gains or losses are very debatable in either direction with the drop in filter. The main advantage is that it's lifetime; you'll never have to buy another one as you can just wash and re-oil (you do however have to buy the cleaner and oil!). The issue with the oil getting on the mass airflow sensor is real, but it arrises when people over oil the K&N which is easy to do. If you oil the fitler properly it won't cause you any problems.
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Unread 01-18-2013   #12 (permalink)
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I have had the K&N filters before,they make a mess and can mess up your air flow sensor,+ you have to wash it and let it dry before you can oil it,and they don"t dry very fast so your car is out of order till you can reinstall the filter or use a stock filter in the mean time,just a PITA for NO gain.For me stock filter and peace of mind.
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Unread 01-18-2013   #13 (permalink)
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There are also two dry variations of the stock drop in filter to consider. Just water and soap to clean both the AFE and AEM. The AFE is more a radical design that is shaped more similar to a cone and the AEM (owned by K&N) is the traditional design.
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Unread 01-18-2013   #14 (permalink)
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Quote:
Originally Posted by sloppymax View Post
There are also two dry variations of the stock drop in filter to consider. Just water and soap to clean both the AFE and AEM. The AFE is more a radical design that is shaped more similar to a cone and the AEM (owned by K&N) is the traditional design.
Where are these other filters sold, please provide link.
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Unread 01-19-2013   #15 (permalink)
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Quote:
Originally Posted by code rz gt View Post
Where are these other filters sold, please provide link.
I got the afe from amazon and they show they have the aem too.
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