4 inch downpipe? - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 03-22-2012, 09:09 AM Thread Starter
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4 inch downpipe?

Guys I want toget a four inch downpipe for my tuck just want some opinions on who sales the best an where to get it just shoot your ideas through
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post #2 of 7 Old 03-22-2012, 09:53 AM
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Too much work required to fit a 4" unless you do a body lift. And nobody makes a 4" for an OBS that I'm aware of so you'll have to buy an SD 4" down pipe and modify it to work.

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post #3 of 7 Old 03-22-2012, 10:12 AM
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Most of us use a 3" dp in an obs truck

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post #4 of 7 Old 03-22-2012, 10:34 AM Thread Starter
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Ok I kinda figured it would be custom but I'll take your word on the pain in the *** part haha I'll just keep my 3 inch it sounds dope just looking for a possible way to make more air flow thanks guys
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post #5 of 7 Old 03-22-2012, 11:09 PM
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3in is all you will need for these trucks. I thought I saw a 3.5" DP for sale somewhere. Either way you got plenty for what you are running.
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post #6 of 7 Old 03-23-2012, 06:01 AM
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Way to much modification needed for a 4"

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post #7 of 7 Old 03-23-2012, 04:11 PM
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Smile 4 inch downpipe

JUST HAD 4 inch MBRP TRIED ON MINE AND WOULDNT FIT. REFITTED THE STANDARD 3 INCH THEN OPENED UP TO THE 4 INCH PERFORMANCE MBRP SYSTEM, SO GOOD NOW !!!
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