Inside the stock EB exhaust...The Muffler

As we know the stock muffler does a spectacular job at making it quiet but how does it do this and would swapping it for something else help from a performance standpoint? Well we now will find out... FOR SCIENCE!!

Down and dirty I hacked this bad boy apart. Overall view.. inlet is on the left.. outlet on the right.



The inlet is decent and has the same diameter as the leading pipe with fiberglass packing at the end behind the typical perforated steel.


Then this happens... The exhaust has only one path to exit the muffler and that is through this perforated steel mesh.


Then into the very small 1 3/4" or so diameter pipe which loops around and out to the tailpipe.



Note there is also more fiberglass packing at the exhaust end as well..


So there it is. The stock exhaust deconstructed. Stay tuned for part 2... the Resonator!



*** Muffler dimensions.. ****
14.5" length
12.25" wide
6.25" height

This is actually really cool to see.

I'm not used to seeing the inside of a muffler. lol.

Restrictive, as expected. Let's see that "suitcase!"

Damn... No wonder I gained so much power from the 6 with my exhaust. (the 6 and Ecoboost share the same mufflers) Thanks for doing this PewterCam!

That is the strangest muffler design I've ever seen, but the stock sound makes perfect sense now, having seen this. Now we know why it sounds like it's being forced through a perforated panel.

Awesome pics! What are you putting on the car in the meantime?

Could you post the dimensions of the muffler?
H/W/D

MustangEcoboost.com said:

Awesome pics! What are you putting on the car in the meantime?

Click to expand...

It already has an Ultimate Racing single 3"

http://www.mustang6g.com/forums/showpost.php?p=395687&postcount=15

Cargo said:

Could you post the dimensions of the muffler?
H/W/D

Click to expand...

I'll get measurements in a bit. and update the Original post with actual measurements of some of these pipes. My tape measure was in the trunk of the Mustang which I didn't grab because the car had a couple inches of snow it when I cut this open.

Thanks for measuring. I need the dimensions on the muffler and resonator.

Mike

mbreinin said:

Thanks for measuring. I need the dimensions on the muffler and resonator.

Mike

Click to expand...

Resonator.
22.5" length
9.5" wide
Thickness ranges as its not square.. it is roughly 3.75" at its thickest and 3" at its thinnest. Looking at it on end its got a triangleish shape. (I posed a pic of it in the resonator thread. don't want to confuse people)

Muffler basic oval muffler..
14.5" length
12.25" wide
6.25" height

Thanks for that.

That... is one horrible design. Restrictive, heavy, and ugly tips to boot. I can't wait to put aftermarket mufflers and a downpipe on this thing.

Oh jesus, it's worse than I thought. :barf:

Thank you very much for doing this.:hail:

Really now? I thought the eco mufflers were the same as the 6's mufflers?

I still have a set of stock 2012 GT Mufflers.....

I wonder how they would sound? They are free.

Mike