Notices

Muffler Swap

Thread Tools
 
Search this Thread
 
Old Jan 16, 2009 | 06:32 PM
  #1  
BigNiner19's Avatar
BigNiner19
Thread Starter
|
Senior User
Joined: Aug 2008
Posts: 136
Likes: 0
Muffler Swap

So I'm really trying to get a slightly better sound out of my 04' 4.6L F150. Not anything loud and raspy, or drone. Just a smooth strong sound. Instead of spending the money on purchasing a full catback, has anyone just purchased a good muffler and swapped it in. I like the magnaflow muffler...I have found a 5 X 8 X 18 muffler, but I'm trying to decide whether I should get a Center/Offset or Offset/Offset muffler to fit new piping up to. I should be able to use my existing hangers if I just cut the old muffler off?

Has anyone put a dynomax muffler on a 4.6L motor similar to my year? How do they sound? Most of the flowmaster mufflers are too loud and raspy for my liking, as are Gibsons, the Magnaflow is loud but not raspy or to loud from hearing clips, but it sounds pretty good.

Also, after looking under my truck...it seems as though the pipe in front of my muffler is a smaller diameter than the pipe coming out of my muffler? I didn't take any measurements yet, but I'm guessing 2.5" into muffler 3" coming out maybe?

Cory
 
Reply
Old Jan 16, 2009 | 07:23 PM
  #2  
WeWonIt's Avatar
WeWonIt
Elder User
Joined: May 2003
Posts: 818
Likes: 0
From: Mobile, AL
Flowmaster 50 series is pretty mellow, I don't like the over priced glasspack style mufflers. But I am running straight 3" with a 2.5" bent tube in place of my muffler and a packed 5" Stainless Steel tip to clean up the sound a bit. Seems to scavenge well and sounds mean but clean. BTW my truck has a 5.4L. I am still looking for somebody that's running a zoomer system...
Zoomers Exhaust Works - Performance Exhaust Systems, Exhaust Tips, and Cat-backs
 
Reply
Old Jan 16, 2009 | 09:00 PM
  #3  
dkf's Avatar
dkf
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
If you don't want a loud raspy exhaust its helps to have a muffler with a larger case volume. You can't generalize all flowmasters as loud and raspy because they make many series with different case volumes. For instance the 50 BB and 70BB2 mufflers are only slightly louder than stock and also have the largest case volume of any of the Flowmaster mufflers. The 50 SUV muffler is slightly louder than the two BB and BB2 mufflers but is not harsh mainly because of its case volume and drone chambers. FMs smallest case muffler will be its loudest muffler.

I had a Dynomax Ultra flow on my truck and I liked it, it was an oval muffler with glass packing. For the sound you want I look at a muffler with around an 18"-22" case length. Your exhaust should be 2.5" from behind the Y-pipe back. No problem with just replacing the muffler, lots of people do it. Trucks usually take a dual opposite offset muffler.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
CorvZ061
2009 - 2014 F150
1
Feb 10, 2016 12:32 AM
krewat
Modular V10 (6.8l)
32
Apr 4, 2011 06:14 PM
mwsF250
Modular V10 (6.8l)
12
Jul 20, 2010 05:23 PM
suthrnslew
Exhaust Systems
1
Sep 2, 2004 10:35 AM
na
Exhaust Systems
4
Dec 3, 2002 12:39 PM




All times are GMT -5. The time now is 11:00 AM.

story-0
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-1
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-2
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-3
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-4
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-5
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-6
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-7
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-8
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-9
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE