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Making Flowmaster 40 Series Louder?

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Old Sep 14, 2007 | 12:24 PM
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iwantanf150's Avatar
iwantanf150
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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!
 
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Old Sep 14, 2007 | 03:20 PM
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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.
 
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Old Sep 14, 2007 | 03:28 PM
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if you just got it put on, then give it a few weeks to break in because it should get slightly louder over time.
 
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Old Sep 14, 2007 | 03:31 PM
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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.
 
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Old Sep 14, 2007 | 03:58 PM
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Talking

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!
Remove the newly installed muffler;that will make it louder!
 
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Old Sep 14, 2007 | 04:19 PM
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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.
 
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Old Sep 14, 2007 | 05:10 PM
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oldtimer got it right.
 
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Old Sep 14, 2007 | 06:45 PM
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would it sound bad if I put cherrybombs on it?lol. Or any other glass pack?
 
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Old Sep 14, 2007 | 06:52 PM
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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.
 
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Old Sep 14, 2007 | 06:58 PM
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Thanks. So I can't have a glasspack with the flowmaster then? I thought I could have both.
 
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Old Sep 14, 2007 | 08:52 PM
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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.
 
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Old Sep 14, 2007 | 11:44 PM
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Or save your money and get true duals with another 40
 
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Old Sep 14, 2007 | 11:57 PM
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I put dual flowmaster 40s on my truck with 3inch tips and 2.25 piping it got louder over time and got a lot deep throaty and mean too hard to get them loud they sound good though
 
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Old Sep 15, 2007 | 12:12 AM
  #14  
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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
 
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Old Sep 15, 2007 | 08:49 AM
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Is there a huge sound difference between the 4.6 and 5.4? I've never heard a 5.4 withs 40's.
 
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