K&N CAI known to contribute to dusting? - Ford Powerstroke Diesel Forum
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post #1 of 20 Old 07-26-2010, 06:22 AM Thread Starter
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Question K&N CAI known to contribute to dusting?

I remember hearing/reading one time to stay away from K&N cold air intakes as they are probably bad to contribute to dusting the turbo and/or engine.

Thoughts or facts regarding this? Or are they good filters as good as any other CAI?

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post #2 of 20 Old 07-26-2010, 10:07 AM
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i have heard not to go with the k and n filters for these trucks. but i dont know that anyone actually has proof that it was due to the k and n. im not trying to start an argument with anyone i just am not sure of the answer.

2002 F250
5in turbo back mbrp exhaust
k&n cold air intake
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post #3 of 20 Old 07-26-2010, 10:21 AM
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I'm not in any position to bad mouth K&N, I've not had one, exept on my ATV, it was on it when I got it. However, if you can get a baldwin/wix 6637 and make your own intake like a lot of us have, why spend the money on a name? The 6637 may not be re-usable, but for the cost, (and size, it's HUGE) it's worth it to me. Just my thoughts... I'm sure others will have first hand knolage of the K&N's....

Greg

'99 E350 DRW Stahl 11' util box van, 7.3 PSD, stock. 138k SOLD

'00 F350 extcab, 9' utility bed, dually 221k

E'99 F250 extcab, S/Bed 211k

'00 Excursion Limited, 7.3PSD 281k

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post #4 of 20 Old 07-26-2010, 10:50 AM
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Stay away from the box filters, the cone filters are fine and if your even worried about that then throw a sock on it... well I would if I drove dirt roads a lot but I don't...

2000 7.3 F250 FX4 ext cab short box

Cobalt Pillar Trip pod gauges, trans temp, boost, pyro
4in down pipe to a 5in tip
KnN intake
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post #5 of 20 Old 07-26-2010, 11:07 AM
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I've had a stock replacement K&N in my stock airbox since I bought the truck with 36,000 miles on it. It now has 142,000. At every oil change, I pull the filter to check, and have never had a trace of dirt in the intake. I've heard of the concern with these, but have never experienced the problem myself.

Y2K F250 CCSB TW chip, 5" straight pipe, 35" BFG's, & some other stuff. Daily driver for 8 years.
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post #6 of 20 Old 07-26-2010, 11:23 AM
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This is my experience with a K&N intake on my truck. I bought and installed it in March of '06. I did buy it before joining this forum and before I read the bunches of info PRO/CON about K&N being on diesel engines. It's working for me.

After I read the negatives, I did see that there were some who had actual personal experiences with them not working well. Many, though, just jumped on the K&N Bashing bandwagon seemingly just 'cause they could. Everyone needs to make up their own mind.

I do clean mine more often than the 50,000 miles K&N says you can go. I'm not an off-roader, though occasionally I have been on dirt or gravel roads. The truck is my daily driver and I also tow a 31' 5th Wheel up to 10 times a year. For a while, after I read the negatives, about once a month or so, I would take the cone filter off, take a clean microfiber towel and reach into the tube going to the turbo and wipe the tube to see if there was dust, dirt or anything else in there. I did not find any. Now I wipe the tube when I clean the filter and I still don't find anything in there. My boost gauge still shows the turbo making plenty of boost while I drive and I can still hear the turbo whistling plenty loud out the exhaust after 4 years of use. So...my conclusion is, FOR ME, K&N is a good filter.

I refer you back to the end of the second paragraph.


Owner | Operator: Darryl
My Truck Garage: Ol' Guy
Tow Toy Garage : Pilgrim International 31RE3SLF5
United States Navy - IC2 - '76-'80

Last edited by SuperCrutyPS; 07-26-2010 at 11:28 AM.
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post #7 of 20 Old 07-26-2010, 11:41 AM
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If you properly maintain your K&N airfilter, and lube it properly, it should be fine.

That said, there is a specific way to do so, that many people dont do. If not done right it will contribute to dusting.

I've heard from so many people to NOT use K&N airfilters, why even chance it. Heard it from loggers, truck drivers, older guys, and many people on forums. You can run one if you like. But I really dont want to pull my turbo to rebuild it so I'm going to stear clear.

-Justin-
1985 Ford F-250 with a 6.9 IDI/T-19 4speed 4x4
Paint, Eagle Alloys, Kelly Safari TSR's, ATS turbo, gauges

2004 Jetta TDI 5 speed
2004 2wd Excursion Limited 6.0. Testing how loyal I am to Ford
1997 Passat B4V TDI. 1 of 80 imported in 97. 50 MPG and a factory 25 gallon fuel tank!
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post #8 of 20 Old 07-26-2010, 01:33 PM Thread Starter
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Quote:
Originally Posted by SuperCrutyPS View Post
So...my conclusion is, FOR ME, K&N is a good filter.

I refer you back to the end of the second paragraph.

Do you have the stock airbox replacement K&N filter, or do you have the CAI style (the conical style)?

I've just learned that maybe most folks are advising to stay clear of the stock airbox replacement elements and NOT the CAI style??? Is this correct???

Thanks
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post #9 of 20 Old 07-26-2010, 01:34 PM
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I have the cone with the tube. I removed my stock box to put this in.


Owner | Operator: Darryl
My Truck Garage: Ol' Guy
Tow Toy Garage : Pilgrim International 31RE3SLF5
United States Navy - IC2 - '76-'80
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post #10 of 20 Old 07-26-2010, 01:53 PM
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Everyone is talking about the stock box... cone stlye are fine...

2000 7.3 F250 FX4 ext cab short box

Cobalt Pillar Trip pod gauges, trans temp, boost, pyro
4in down pipe to a 5in tip
KnN intake
Tuned by PHP
Banks big head waste gate
6in Pro comp lift
Mag hytec tranny pan
Diablo predator programmer (used for pulling codes)
Foil delete
ATS Turbo housing
Halo projector headlights
BUILT TRANNIE-
Euro taillights
Radar detector
Window tinted 20%
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