Air filter
Hotshot
Joined: Feb 2007
Posts: 10,499
Likes: 10
From: Sterling Heights,Mi
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
Get rid of the stock air box. It unbolts with 4 bolts, so if/when you decide to sell you can put it back in easily. The stock air box is horrible at sealing and will let dust into your turbo and motor... a new turbo can run $500+. The 6637 is the affordable, easy way to get good clean air to your motor. Look at my photo... you don't want that to be your truck!
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Posting Guru
Joined: Mar 2008
Posts: 1,734
Likes: 1
From: Monroe VA
I think there was a recall on some of the stock filter boxes from ford for the dusting problem. Ford does make a better filter setup, I think its called the AIS?? I never really looked into it though and dont know much about it, but it from ford. I just went with 6637 filter. You'll really hear your turbo after installing the 6637!! Somebody will correct me on this AIS filter if I'm wrong.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
AIS is right Lee. They run around $220 and up, offer filtration that is second to none but suffer some in flow compared to a 6637 or aftermarket intake. It will have a nice factory look though, so it might be worth considering for the OP. Plus, you don't get that *^%$$&( drone in the cab you get with the 6637.
Junior User
Joined: Jul 2008
Posts: 87
Likes: 0
From: Ardlethan, Australia
Thanks Fellas, will check out the AIS, it sounds like what I am looking for.
I was a bit worried about the intake noise you mentioned, I like to keep everything quiet as possible in the cab, as everytime I go somewhere its a minimum 5 hour drive.
I was a bit worried about the intake noise you mentioned, I like to keep everything quiet as possible in the cab, as everytime I go somewhere its a minimum 5 hour drive.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
The 6637 is noisier than the AIS.
The 6637 breathes a lot better than the AIS and offers just as good air filtering as the AIS.
But I like the AIS a lot better because of the quiet.
Here is some information to help you make a more informed decision.
AIS air filter information
And this.
Ford Intakes , AIS Filters
Let us know what you do and how you like it.
