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1999 to 2003 7.3L Power Stroke Diesel 7.3L Power Stroke Diesel equipped Super Duty and Excursion

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  #1  
Old Wed, July 21st, 2010, 11:13 AM
mod11 mod11 is offline
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Muffler or no muffler?Had a dicussion with a guy last night said the 7.3 powerstroke would make more ponies with a muffler,any thoughts from the guru's.Wouldn,t help the turbo lag a touch with a muffler?Just thinking
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Old Wed, July 21st, 2010, 11:39 AM
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cleatus12r cleatus12r is offline
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The 94.5-97 PSDs had a straight-through 3.5" muffler. There is very little benefit besides sound by going larger on those or deleting the muffler. Installing a 3" turbocharger downpipe is a necessity though!

On the 99-03 PSDs, the muffler is a maze of baffles and flow redirectors. By "losing" the factory muffler on those trucks, besides being a lot louder, they can see a benefit in breathing and power.
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Old Tue, August 17th, 2010, 10:03 AM
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KT Performance KT Performance is offline
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Almost all after market exhaust kits are high-flow mufflers and make little back pressure. I tell anyone planning on pulling a trailer on long trips or many short trips to go with a muffler because the drone of a straight pipe exhaust gets to a lot of guys when under load.

Kenny
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Old Fri, August 20th, 2010, 01:41 AM
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Quote:
Originally Posted by KT Performance View Post
Almost all after market exhaust kits are high-flow mufflers and make little back pressure. I tell anyone planning on pulling a trailer on long trips or many short trips to go with a muffler because the drone of a straight pipe exhaust gets to a lot of guys when under load.

Kenny
I 2nd that statement, I like the straight threw silencer (like a 2 stroke dirt bike) type mufflers.

I used my friends '97 PS with stacks and no muffler to haul my 8' tall x 8' wide x 32' aluminum gooseneck stock trailer, that was very annoying I officially dislike stacks on a pickup. I couldn't even talk on the phone with the windows up.
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Old Fri, August 20th, 2010, 02:09 AM
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Muffler FTW!

Everyone always asks me why I dont take mine off, and I tell them that I still have to drive the damn thing................without loosing my sanity.
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