exhaust sizing? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 3 (permalink) Old 09-14-2011, 03:51 AM Thread Starter
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exhaust sizing?

so im only really doing minimal mods to my truck. will i be ok with just replacing my downpipe to a 3.5 and sticking with the rest of the stock exhuast being a 3.5? or should i change it to a 4?
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post #2 of 3 (permalink) Old 09-14-2011, 04:41 AM
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Re: exhaust sizing?

You'd be alright stickin with the 3.5 the whole way, but if you've got the funds you can find a good cheap 4" that would help a little more, but for just small mods a 3.5 would be good enough

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post #3 of 3 (permalink) Old 09-14-2011, 08:25 PM
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Re: exhaust sizing?

The stock system with delete pipes will have more low end than a 4", same goes with a full 3.5" system but not as much as the stock with delete pipes.
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