Flowmaster Muffler (not exhaust system)

Reply Subscribe

Thread Tools

Search this Thread

Nov 27, 2008 | 01:50 PM

jsg203

Thread Starter

New User

Joined: Sep 2007

Posts: 4

Likes: 0

Flowmaster Muffler (not exhaust system)

I have a 2004 F-250 30,000 miles. I want to upgrade my muffler. I'm looking for a more mellow rumble then a loud aggresive tone. In your opinion which muffler should I go with: Flowmaster 40 series or 70 series? Or, if you would suggest a muffler that would meet my expections would be very helpful as well. Also, any tips, suggestions, or warnings about installation. Thank you!

Nov 27, 2008 | 03:41 PM

patrickke

Posting Guru

Joined: Nov 2008

Posts: 1,637

Likes: 1

From: Lexington,Ky / Owensboro

have you looked at magnaflows? they are in the same price range and sound really good....they dont have as much drone as flowmasters and in my opinion you get better performance...

Nov 27, 2008 | 06:20 PM

dew the thunder

Elder User

Joined: Feb 2007

Posts: 805

Likes: 1

From: South Bend, IN

Which motor? For the V10 I like the sound of the Flowmaster 40 cuz its louder (and actually sounds pretty good) than the Magnaflows but for the V8 I say Magnaflow all the way.

Nov 27, 2008 | 06:28 PM

06silvercrew

Posting Guru

Joined: Apr 2008

Posts: 2,424

Likes: 2

From: Albemarle, NC

Ive got a 4'' MBRB Id sell DIRT cheap if your wanting it for a diesel.

Nov 27, 2008 | 10:58 PM

adgunn

Junior User

Joined: Jun 2007

Posts: 54

Likes: 0

From: Brownfield, TX

my muffler guy kinda screwed me....used a flowmaster knock off, with a dual exit...used 2.5" for the inlet, from the Y pipe, and 2" to each tip...truck sounds ok idling, but when reeved up to 2500-3000 sounds like pissed off indy car....after 3000 rpm gets more quiet...kinda wished hed done 3" pipes....inplace of the cat....

Nov 28, 2008 | 09:49 AM

dkf

Hotshot

Joined: Mar 2007

Posts: 10,101

Likes: 40

From: Pa

I have an FM70 on my 04' V10. I modified the muffler to make it a tad louder and it sounds great. If your exiting the exhaust in the stock location or behind the rear axle I would look into the flowmaster 50SUV or 50HD mufflers. They will provide more sound than the 70 but will still have enough capacity to not be annoying. You will need a dual opposite offset muffler which has the inlet and out lets off center.(Opposite sides from center, have pics in my gallery)

Nov 28, 2008 | 12:09 PM

ben8892002

Senior User

Joined: Jun 2007

Posts: 165

Likes: 0

i have an 03 5.4 with a custom made 3" y 3" straight pipe in place of the cat and a welded in flowmaster 40 series. sounds very good at idle but to some its loud when your on it pretty good.

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Verdad Gallardo

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Joe Kucinski

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Brett Foote

Top 10 Ford Truck Tragedies

Joe Kucinski

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

Dec 1, 2008 | 05:07 PM

high ho silver

Posting Guru

Joined: Apr 2004

Posts: 1,342

Likes: 0

From: Georgia

Quote:

Originally Posted by akford351

The 50 series sounds like what you're after... the 70 might be a little too quiet.

Ditto on the 50 series. I have the 50 and love it. From the outside it sounds great but is much quieter from the inside at highway speeds. I didn't want to hear the drone all the time.