Making Flowmaster 40 Series Louder?
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Junior User
Joined: Feb 2007
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Making Flowmaster 40 Series Louder?
well i have just gotten my Flowmaster 40 Series muffler installed. i used the factory pipe and they just welded on another section of pipe so it comes out like it did from the factory. how can i make this more loud without alot of money? maybe turning the tip down??? how would that look if i turned the tip down? ANY and ALL ideas are welcome. Thanks!
Senior User
Joined: Aug 2007
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From: CANADA
A large tip can make it louder, something like a big wazoo from hedman. I had single 3 inch, to a 3 in 3 out flowtech after burner muffler, and a 4 inch x 24 long tip. It was on my 02 4.8 chevy reg cab sbx, it sounded mean for a 4.8. Droned on the highway, but I didnt care.
Posting Guru
Joined: Jan 2006
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From: Outer Banks, NC
I got the same exhaust. Like Steve said give it about a month. I will break in and get louder and it will be nicer sounding. My volant intake made mine a whole lot louder and made it sound better also.
Cargo Master
Joined: Aug 2002
Posts: 2,013
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From: Cajun Country
Originally Posted by iwantanf150
well i have just gotten my Flowmaster 40 Series muffler installed. i used the factory pipe and they just welded on another section of pipe so it comes out like it did from the factory. how can i make this more loud without alot of money? maybe turning the tip down??? how would that look if i turned the tip down? ANY and ALL ideas are welcome. Thanks!
Senior User
Joined: Apr 2006
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From: Escondido, Ca
Flowmasters don't have any internal sound deadening material...they use directional sheet metal baffles to do the work...so there is no break in period.
I have a Flowmaster cat back on my 04 FX4, and it sounds the same as it did from day one. It's been on my truck for 3 years.
I have a Flowmaster cat back on my 04 FX4, and it sounds the same as it did from day one. It's been on my truck for 3 years.
Senior User
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From: Austin, Texas
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Senior User
Joined: Jan 2007
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From: Austin, Texas
What would you do with the Flowmaster you just bought? lol. BTW, it wouldnt hurt if you go under and look at the muffler to make sure its a real Flowmaster. I got a flowmaster installed months ago and it didnt sound the way I wanted. Turns out they installed a fake one. So I called flowmaster and they put that shop under investigation. The muffler should have a serial number, check my gallery for pictures of the fake flowmaster.
Post Fiend
Joined: Jan 2003
Posts: 10,323
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From: Montana Territory
Sure you can have both, but it won't help anything, except make things quieter. About the only thing you can do is to remove the muffler completely. The Flowmaster 40 is probably the loudest street legal muffler.
Posting Guru
Joined: Jan 2004
Posts: 1,254
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From: Murray
Its an easy solution...just have it dumped (turned down) right after the muffler. No tail pipe = more sound. Mine are loud as heck on my '73 and theyre dumped...and as soon as my 04 is outta warranty...I'll do it to that too.
-Chris
-Chris