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so many trees
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281 Posts
Discussion Starter #1
I know that you can use a obs style filter on a 7.3 super duty.
In order to do this do i need to do anything beyond remove the intake hose and gut a space into the airbox?

thank you for you time
 

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Village Idiot
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8,209 Posts
sd filter or napa 6637?

DIY FORD Tymar Intake
i would use 4" exhuast not pvc though.

not a sd but give you the idea..
 

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so many trees
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281 Posts
Discussion Starter #3
6637. i could never remember the number or brand and thought it was an obs filter.
 

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Village Idiot
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8,209 Posts
google guzzle 7.3 xmore good stuff to read.
 
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