Exhaust turndown - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 3 (permalink) Old 12-26-2016, 04:31 AM Thread Starter
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Exhaust turndown

Hi all. My 2001 7.3 has a 4" straight piped in front of the wheel. Was that way when I bought it. It's pretty loud (I live in suburbia). Current has a 6"tip on it. I'd love to add a muffler, and take it behind the wheel, but there are lots of "higher priority" mods on my list. If I were to remove the 6" tip and replace it with a 4" turn down, how much would it help?

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post #2 of 3 (permalink) Old 12-26-2016, 09:48 AM
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Re: Exhaust turndown

it would probably be a bit quieter on the road.

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post #3 of 3 (permalink) Old 12-26-2016, 06:28 PM
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Re: Exhaust turndown

Imo, it won't make a difference. If anything, a turn down will make it bounce off the ground vs the 6" tip bouncing off buildings.
Get a walker "BTM" (big truck muffler) for now.

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1979 chevy c30 dually, sm465, 373's? Converted to 6.2 diesel, pump turned up and advanced a hair.(wrecked)
1994 ford F350 dually 4X4: 7.3 powerstroke, 5 speed. 6637, straight pipe into dual stacks. Cooper discoverer at/3's.
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