Air Filter

[Invader]

The gauze type filters do flow better..............at 3500 rpm and up.
When I first got my 03, I saw a flow chart comparing the Donaldson vs the K&N filter(I think it was KN). They had almost identical flow numbers until 3500 rpm then the K&N flowed more. Seems your paying 300 bucks for a filter that does the same as the original. IMHO.
The tech at my dealership said he had a truck with 140000 miles and still had the original filter, the filter minder was just about closed, so he should have changed it sooner. I think if your not in a dusty area the filter should go 60000miles easy.

 

[rgdillon]

Yep - I'm a fan of the stock filter - no plans to change here.

Ron

 

[budtoh3zo]

I like the stock to, Flow really good and last alot longer.

 

[Mark Craig]

Invader,

I changed my 1st stock filter out at 8000 miles and could see a difference in boost PSI, the Powercore does a great job of filtering but it is restrictive much sooner than you think it is. PLEASE do NOT ever trust the Ford air minder, it has been proven many many times they are inaccurate and not consistent from one truck to another etc.

I saw even a higher boost level when I installed the AFE Stage I Pro Guard 7 system too. So far after 60,000 miles the silicone readings are the same as the Powercore.

Mark @ DPPI

 

[TexasExcursion]

So far after 60,000 miles the silicone readings are the same as the Powercore.

Mark @ DPPI

I've had my K&N FIPK on for about 60,000 miles and I clean it every 10-15k. My silicone readings from Blackstone are consistently at 4 ppm. I don't know what the Donaldson filter levels are, but Blackstone seems to think 4 is pretty good. Universal averages are 12 for a 6.0.

Just my 2 cents.

 

[F350CCFX4]

I use the Air Aid and love it. The stock filter left me on the side of the road twice, so I went with aftermarket. Much better throttle response and actually hear the turbo a bit more.

 

[mtruaxpowerstroke]

i got the airaid oem filter and it fits nice in the stock airbox. It is easy to clean and flows real nice. I bought it for $50.00 dollars of ebay(cheaper than the stock filter) and it compliments my 4inch banks monster exhaust turbo back system. The power increase with those two is noght and day.

 

[mtruaxpowerstroke]

oh i forgot to mention the airaid filter is huge.compared to any k&n cone shaped filter

 

[The Dude]

Stock air cleaner I think not! I slammed in a k&n! I noticed a huge difference out of the hole and the turbo winds out a lot faster and louder!

 

[draftlover]

I used a drop in True Flow. I put a link here and it's the one on the left side..the oval one. It drops right into the stock air box. It stays cleaner and adds a few ponies. All you have to do is take it out and wash it, then put it back in.

http://www.eautoworks.com/html/ORD-1-1-1-22068.cfm