4.6L General Discussion This section is for non-tech specific information pertaining to 4.6L (Modular) Mustangs built from 1996 to 2004.

Muffler choices

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Old Mar 24, 2011 | 01:11 PM
  #1  
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rsh0763
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Default Muffler choices

OK, so after finally getting the H-pipe (Summit) sealed tight, with MIL elims, 1 extender (drivers side) I am throwing no codes and I welded the join because the clamp sucked awful.

Now onto the mufflers. With my 89 5.0, I used BBK headers and an entire Mac System with H-pipe that was so perfect. It fit good, sounded good and lasted well. It was loud, but not earth shattering loud. In every other V-8 I have owned (5) I have used flowmaster 40's with cats. If I have the OR H-pipe will 50's be nice and loud? Will they be louder than stock? Right now it sounds pretty good with the stock mufflers and the Summit pipe, but just not loud enough.

Anyone running that combo? Or is there a recommendation other than flowmaster that fits the bill and is less money?
Old Mar 24, 2011 | 01:21 PM
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Well i have Dynomax bullets w/ my o/r h and it will wake the dead haha...its MEAN sounding but still has a deep tone down low!

But before i had flowmaster 40s w/ the o/r h and it sounded really good..nice and deep, and plenty of volume.

Im really wanting for SLP LM2s to put on this thing...i think it will add a lot more tone.

SUMMARY: Id try the 40s and see how ya like em...they're very cheap to find and if you don't like em...you can change and not be hurting in the wallet!
Old Mar 24, 2011 | 01:25 PM
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A buddy of mine had the 50's series with shorty headers and a o/r x pipe, and it was very quiet. Louder than stock of course, but very very quiet in the realm of aftermarket exhausts.

Personally i think 40's or 44's with a o/r h sound awesome. Not too loud, but loud enough with a great overall tone.
Old Mar 24, 2011 | 01:44 PM
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Flowmasters are my favorite but they also tend to resonate.
Old Mar 24, 2011 | 03:24 PM
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Originally Posted by sxynerd
Flowmasters are my favorite but they also tend to resonate.
As has been my experience. On a 2004 Ram 2500 4x4, I was only towing a boat and at every incline it was murder on the family. I replaced it with a 2005 Cummins Diesel, it has a wide open 4" exhaust and less disturbing than the Hemi with 40's.. Those had cats too!

Of course, this isn't the family car is it now? I just feel like I wouldn't be letting my neighbors down if I didn't let them know whenever I was leaving/arriving. Heck, they used to compliment me on the Mac setup of my 5.0, why not this too?
Old Mar 24, 2011 | 03:26 PM
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Yeah, screw the 50's.... those are for Women driving Tahoe's or Expy's.. Mind is made up.
Old Mar 24, 2011 | 03:50 PM
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i will go make a vid real quick of my SLPs and glasspacks. sounds really mean


i pissed my neighbors off but i dont care.

http://www.youtube.com/watch?v=RX5vV_yNkk0

Last edited by turbo232; Mar 24, 2011 at 04:06 PM.
Old Mar 24, 2011 | 04:29 PM
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Here is my stock 2v with 40 series Flows & an H-pipe.
http://www.youtube.com/watch?v=RtKh5Z9CHII
Old Mar 24, 2011 | 04:31 PM
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Originally Posted by sxynerd
Here is my stock 2v with 40 series Flows & an H-pipe.
http://www.youtube.com/watch?v=RtKh5Z9CHII
Sweet sound!!!!
Flow 40's and H!!!!!
Old Mar 24, 2011 | 04:32 PM
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Those SLP's sounds like a wet Rosie O'Donald fart



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