7.3 muffler question
Thread Starter
|
Posting Guru
Joined: May 2015
Posts: 1,002
Likes: 38
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
Joined: Oct 2008
Posts: 4,818
Likes: 1
From: Avilla, IN
x2
Postmaster
Joined: Mar 2004
Posts: 3,897
Likes: 8
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
Posts: 8,476
Likes: 37
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.
Trending Topics
Tuned
Joined: Jan 2008
Posts: 294
Likes: 16
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
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: May 2013
Posts: 208
Likes: 0
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
Posts: 65,449
Likes: 5,518
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
Posts: 3,014
Likes: 115
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.
Thread
Thread Starter
Forum
Replies
Last Post
tabijan
1968-Present E-Series Van/Cutaway/Chassis
2
Nov 12, 2012 03:42 PM
merlins'92f250d
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
10
Jan 23, 2006 11:18 PM