7.3 straight exhaust - Diesel Bombers



Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

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Old 12-16-2011, 05:32 PM
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Default 7.3 straight exhaust

I need a cost effective way to get my truck louder. Any suggestions? And will it help gas mileage, even marginally? Thanks!
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Old 12-16-2011, 05:40 PM
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Cut out the muffler and replace with a piece of pipe... that's about as cost effective as it gets... And no, you will not gain any MPG's by doing this...
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Old 12-16-2011, 06:14 PM
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Should I buy the mbrp piece or just any 4" exhaust tubing
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Old 12-16-2011, 06:40 PM
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Any pipe will work...
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Old 12-17-2011, 12:32 AM
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if you have stock exhaust you'll need 2- 3 1/2" to 4" reducers
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Old 12-17-2011, 01:27 PM
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ok thanks....can I just get the reducers at any exhaust shop?
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Old 12-17-2011, 02:05 PM
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Some exhaust shops have larger pipe but you can find a pretty reliable stock of 3"+ exhaust pipe pieces at any truck/industrial supply store.

I'd caution against a straight pipe on a Powerstroke....they sound a lot better with some sort of muffling device.
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Old 12-17-2011, 02:28 PM
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well that's just personal opinion. i have mine straight piped but i never had a muffler on it when i got the kit so i don't know.
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Old 12-17-2011, 03:19 PM
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Quote:
Originally Posted by 7.3Krawler View Post
I need a cost effective way to get my truck louder. Any suggestions? And will it help gas mileage, even marginally? Thanks!
By the time you get done monkeying around with exhaust, you would be $ ahead by purchasing a Summit Racing 5" system and running it w/out a muffler. It starts with a muffler delete, then you wonder what a bigger cat back will do, then you realize you don't live in a smog area and the POS dealership sold you a truck without a cat anyway, so you add a down pipe. With each bigger piece, the non existant mpg gain has taken a back seat to how cool your rig sounds and the extra power you have freed up! Aluminized is mandatory, stainless if you want it to out last your rig.

I spent more money "saving money" on my rig than if I would have dropped the cash the first time!

---AutoMerged DoublePost---

Quote:
Originally Posted by Mr. Miyagi View Post
I'd caution against a straight pipe on a Powerstroke....they sound a lot better with some sort of muffling device.
Never heard, or even thought I would have heard that one....

Last edited by Karls03; 12-17-2011 at 03:19 PM. Reason: Automerged Doublepost
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Old 12-17-2011, 03:52 PM
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Just get a section of 3 1/2'' pipe to replace the muffler... Cheap and effective.
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