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Go Back   Ford Powerstroke Diesel Forum > Ford 03-07 6.0L Powerstroke Forums > 6.0L Ford Excursion Discussion
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6.0L Ford Excursion Discussion This forum is for topics relating to the excursion only.

 
       

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  #1 (permalink)  
Old 08-12-2008, 03:49 PM
mustangkcode mustangkcode is offline
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Is too much air flow no good?

Have 04 Excursion with 6.0 and a K&N oval filter. Was getting decent mpg. Changed back to stock filter and cut out a 3" circle behind grille for more air flow. Went back to K&N for better mpg than stock filter. This time I did not cover up hole drilled for stock filter. You can actually see through grille and thru radiator brace and see filter. I figured that more air flow through the hole drilled would be good with the K&N filter. This is where it gets confusing. I get a couple less mpg leaving hole opened rather when there was no hole. I thought the more air flow the better the efficiency:icon:????????_ford
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Old 08-12-2008, 07:49 PM
outlawdiesel outlawdiesel is offline
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6.0

the stock filter is good for 400 or 450hp.the k&N is not a good filter.you will sand blast your wheel.afe,airaid,tru-flow,anything but k&n.fresh air is good.
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Old 08-13-2008, 07:28 AM
mustangkcode mustangkcode is offline
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Thank you for reply. Can you explain what you meant by "will sand blast your wheel". and what is afe,airraid, truflow? Are these brand names. My goalis better MPG. I found that hard to do with stock filter. When I went to 4" ehaust from the down pipe back and remove kitty, and installed flow tru muffler with K&N I found to get better MPG. What is it that you do not like about K&N? Thank you for your reply.
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Old 08-13-2008, 07:46 AM
baddkarmaracing baddkarmaracing is offline
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people around here say that the k&n will let dirt thru because it doesnt seal properly and you will dust your turbo those were other brands that he listed
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Old 08-13-2008, 11:48 AM
outlawdiesel outlawdiesel is offline
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k/n

well the best thing to do with that K/N is find the trash can and put it in it.before you dust your turbo and so on.
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Old 08-24-2008, 06:52 PM
GnFnRs GnFnRs is offline
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wonder why that is? i have k&n's on everything.except my X. but ihave ran them for years on atvs and stuff with problems
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Old 08-24-2008, 07:58 PM
h2odrx h2odrx is offline
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Quote:
Originally Posted by GnFnRs View Post
wonder why that is? i have k&n's on everything.except my X. but ihave ran them for years on atvs and stuff with problems
Did you mean that or was that a Freudian slip?
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