K & N air filter - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 13 Old 06-29-2009, 11:14 AM Thread Starter
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K & N air filter

Anyone have results from installing this air filter on 2008 6.4l.? Also, will void the warranty?
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post #2 of 13 Old 06-29-2009, 11:17 AM
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Originally Posted by DDRN View Post
Anyone have results from installing this air filter on 2008 6.4l.? Also, will void the warranty?
I wouldn't run a K&N on a diesel or any other vehicle PERIOD. Go with an AFE, Banks, or S&B. The warranty issue just depends on your dealer.
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post #3 of 13 Old 06-29-2009, 01:14 PM
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^^^ What Cobb said. If your going to put an intake on your truck don't put a K&N on it. AFE is loud and works great. S&B is quiet and works great. Can't go wrong with either.

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post #4 of 13 Old 06-29-2009, 01:15 PM
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Quote:
Originally Posted by CobbsDieselPerformance View Post
I wouldn't run a K&N on a diesel or any other vehicle PERIOD. Go with an AFE, Banks, or S&B. The warranty issue just depends on your dealer.
if you are doing an intake. but honestly i think an intake on a stock truck is pointless. jmo


2008 Ford F-250 6.4L
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post #5 of 13 Old 06-29-2009, 01:20 PM
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Wichester33 is right. If you don't put a delete pipe and tuner on the truck, it will be pointless. They really don't provide for any gain on a stock truck. I always assume people are doing deletes on here lol. If you are going to do one on a stock truck then go S&B, they seem to be the only one that does not throw a code.

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post #6 of 13 Old 06-30-2009, 06:12 AM Thread Starter
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Thanks to all of you for the responses concerning k & n air filter. Due to yall's opinions, I'm gonna hold off on installing any type of new intake for now. I have added the Bully triple dog E3 & it seems to have improved my mpg by about 4 - & it hasn't affected the codes so far.
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post #7 of 13 Old 06-30-2009, 08:24 AM
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Hmmmm, 4 mpg increase with a DPF....

Is that hand calculated or by the dash gauge/lie-o-meter?

Jeff Dodd
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post #8 of 13 Old 06-30-2009, 11:05 AM Thread Starter
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Not a DPF. Installed a Bully Triple Dog E3 chip. From gauge I was averaging 13.2 mpg & now with chip am averaging around 17.0.
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post #9 of 13 Old 06-30-2009, 11:39 AM
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Quote:
Originally Posted by DDRN View Post
Not a DPF. Installed a Bully Triple Dog E3 chip. From gauge I was averaging 13.2 mpg & now with chip am averaging around 17.0.
Yeah you might as well throw those numbers out the window casue they are wrong.
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post #10 of 13 Old 06-30-2009, 11:55 AM
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Originally Posted by DDRN View Post
Not a DPF. Installed a Bully Triple Dog E3 chip. From gauge I was averaging 13.2 mpg & now with chip am averaging around 17.0.
You have a DPF is what I was saying, unless you have a DPF delete pipe, DPF-R module and the Bully Dog tuner. The dash lies man. I garuntee that if you hand calculated a 300 mile trip you would not see the 17.0 mpg you think you have. It would be closer to the 13.2, probably lower.

Jeff Dodd
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2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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