7.3 muffler question
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Joined: May 2015
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From: State of Delusion.
7.3 muffler question
Ill ask one more quick question then stop posting in here for a bit. Is our mufflers the flow through style or the constricting style? Just wondering if deleting the muffler is worth it to help with the egts.
Logistics Pro
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From: Avilla, IN
x2
Postmaster
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See. None of us are perfect, well except Bill, point being, get opinions about what to do. We all like answering questions and helping out the next guy. I would get rid of the stock system personally. They do flow better. By the best mod you can do is get your truck running right. A properly running truck is the best place to start.
Lead Driver
Joined: Oct 2003
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From: Madison, WI
(Bald eagles are hatched, BTW.....
)Anyway.... as said above, START with the downpipe. It's a bigger restriction than the muffler, and generally, the further upstream that you unrestrict (well, de-restrict) the exhaust, the more effective it is.
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Tuned
Joined: Jan 2008
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From: Kamloops, BC. Canada
OP already has a DP.... Regarding deleting the muffler and helping (lowering) EGT's perhaps on a sustained long pull, average daily driving I'd not think so. Deleting the stock muffler will get you a harsh exhaust note (when putting your foot into it), if towing can make for obnoxious drone reflected back off what you are towing. Stock exhaust (with stock muffler) is good to about 400 RWHP, now having said that most people change out long before that. What I've done is yank the muffler, knock the stuffing out of the Cat and it acts like a resonator, exhaust note is not too harsh, no drone and works until you opt for a 4 or 5" system.
jrc
jrc
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My OEM stock muffler is a flow-through type and does not seem to create any significant backpressure. I've still got mine and it seems to be in great shape.
Installing a 3-inch downpipe in place of the pancaked OEM is the best improvement I could find. I also lost the cat in the fear it would get a hairball sooner or later. I kept the rest of the stock 3.5-inch exhaust pipe because I believe it's made of durable stainless steel and is bigger than the downpipe anyway, so it shouldn't be a restriction.
Installing a 3-inch downpipe in place of the pancaked OEM is the best improvement I could find. I also lost the cat in the fear it would get a hairball sooner or later. I kept the rest of the stock 3.5-inch exhaust pipe because I believe it's made of durable stainless steel and is bigger than the downpipe anyway, so it shouldn't be a restriction.
i ain't rite
Joined: Mar 2005
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From: Marlboro Mental Hospital.
EXACTLY!!!
^^^THIS TOO^^^
See. None of us are perfect, well except Bill, point being, get opinions about what to do. We all like answering questions and helping out the next guy. I would get rid of the stock system personally. They do flow better. By the best mod you can do is get your truck running right. A properly running truck is the best place to start.
OP already has a DP.... Regarding deleting the muffler and helping (lowering) EGT's perhaps on a sustained long pull, average daily driving I'd not think so. Deleting the stock muffler will get you a harsh exhaust note (when putting your foot into it), if towing can make for obnoxious drone reflected back off what you are towing. Stock exhaust (with stock muffler) is good to about 400 RWHP, now having said that most people change out long before that. What I've done is yank the muffler, knock the stuffing out of the Cat and it acts like a resonator, exhaust note is not too harsh, no drone and works until you opt for a 4 or 5" system.
jrc
jrc
most of us don't have them silly cats on our trucks
Cargo Master
Joined: Jul 2010
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Well, in this case, they fly fully grown out of the tailpipe when he fires up the engine, beginning their mission to spread justice and freedom throughout the world. Every time he starts the truck.
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