Dual 4" or single 5"

ZombieHNTR

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Looking to replace my exhaust, I plan to run a 4" down pipe but woundering what would be more beneficial with a DPF delete... a 5" back or dual 4". I know the dual 4" Ys off the delete pipe.
 

Erikclaw

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Flow wise it won't make any difference. Aren't going to see a difference, I have heard at power levels around 1000 or so is when a 5" would help. Now sound wise they are different. I run a 4" Flow Pro w muffler and like it. Quite cruising and will growl under WOT.
 

ZombieHNTR

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I've heard a friends set up with a 4" down pipe and 5" exhaust and honestly it didn't sound any different then mine right now with 4" down pipe back, but the plan now is to get a 4" down pipe and full 5" exhaust.
 

Petro

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4" straight pipe from the turbo back on mine, sounds alright but i wish it was louder and had more chop like my 7.3, So does the 5" make it sounder deeper or what? Im very curious about this
 

Dzchey21

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i had trobles with my duals after a couple years tearing the welds for the hangers

I would run 4 inch single honestly...
 

Cdills

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I just put 5" straight pipe from the down pipe back and am very pleased with it.
 

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