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Discussion Starter #1
I went camping this week and guy next to me had a custom 5" exhaust on his truck. I thought he had more when I first heard the truck, could really hear the turbo whining up quickly. Anyway, since his was custom and he is from another state, I am seeking recommendations. He said this is the only mod on his truck and he gained 3 mpg pulling his RV trailer.

Any of you have recommendations for what I should look for to possibly add this mod to my truck?

Thanks
 

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I Just Break Stuff
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2,201 Posts
:whs::bsflag:Most exhaust come with a 3.5" downpipe. You will really hear the whistle with a 4" DP. Any exhaust shop can make you a "custom" exhaust. Easier to just buy one. Lots of vendors here that can hook you up with a good set up.
 

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Agreed, love my Flo Pro exhaust. Sounds like a jet engine when u turn the truck off.
 

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If you just want to hear the turbo, cut the damn thing off. Turn down somewhere where the cat should be. Lol

3 mpg? I dont think so. I had to buy a tuner for that
 

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PSN Local
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586 Posts
I have 4" DP hooked to a 4" straight pipe and it whistles real loud! Sounds good and it performs a little better even though it's stock IMO.
 

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Super Moderator
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Use the MBRP 3.5" downpipe and MBRP cat delete pipe. Find a local shop to cut out the muffler and enjoy the whistle.
 

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Hell, a reciprocating saw will cut the muffler out!
 
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