6637 filter kit
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
I believe many who add a box do so to reduce noise and/or keep heat away. Good luck, hopefully you enjoy the sound. PMS(Powerstroke Modification Syndrome) sets in fast after your first couple mods!!
Cargo Master
Joined: Apr 2007
Posts: 2,333
Likes: 1
From: St. Louis, Mo.
Like Al said u don't need a box. Youll hear the turbo spool up more with the open filter vs. the stock box, but I think thats a good thing. You can always fab a box up later if it is too noisy for you.
Junior User
Joined: Jun 2012
Posts: 55
Likes: 0
I added my 6637 the other day w no box and i didnt hear much of a difference in the noise dept.. Now that could be because I am still running the stock intake tube and havent done the CCV mod, but I am not sure. First mod I have done to this truck since I got it at the end of May
Cargo Master
Joined: Apr 2007
Posts: 2,333
Likes: 1
From: St. Louis, Mo.
I added my 6637 the other day w no box and i didnt hear much of a difference in the noise dept.. Now that could be because I am still running the stock intake tube and havent done the CCV mod, but I am not sure. First mod I have done to this truck since I got it at the end of May
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nlemerise
1999 - 2003 7.3L Power Stroke Diesel
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Oct 25, 2007 07:30 PM
