New Muffler
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Laughing Gas
Joined: Feb 2011
Posts: 991
Likes: 6
From: Newberry Springs, CA
New Muffler
Well, I had the cheap Spintech muffler in my truck taken out today and replaced with a Flowmaster 70 Series Big Block. Haven't put too many miles on it yet but it ROCKS. 
The Flowmaster is about 2 1/2 times bigger than the Spintech, and it quieted the truck WAY down.
I'll get to tow with it next weekend, hopefully I'll have good news after that!!!!!!
The Flowmaster is about 2 1/2 times bigger than the Spintech, and it quieted the truck WAY down.
I'll get to tow with it next weekend, hopefully I'll have good news after that!!!!!!
New User
Joined: Mar 2010
Posts: 18
Likes: 0
I've had 2 flowmasters on my 04' f-250 one a 70 series the other a 50 series both sounded about the same but recently switched to a Magnaflow do to the flowmasters both rusting though in less than 3 years each. Not to mention the Magnaflow has a much better sound imho.
Elder User
Joined: Dec 2004
Posts: 891
Likes: 1
From: Toulon,Il.
Do you by chance have any soundclips available,as I'm wanting a Magnaflow also. I have seen the same problem with Flowmasters and haven't really liked the ones my friend had on his V10. Sorry if hi-jacking....
Senior User
Joined: Mar 2003
Posts: 285
Likes: 0
Check out Krewat's vid clip, he has a magnaflow muffler, ebay headers, and Y pipe.
YouTube - Ford V10 2-valve with ebay headers and y-pipe with Magnaflow 12589
YouTube - Ford V10 2-valve with ebay headers and y-pipe with Magnaflow 12589
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