[FadyA]

I finally got rid of the rear muffler today and replaced it with a 3' inch stainless steel pipe. I thought some may be interested so here's the result with a quick video clip. Sounds more of a HEMI now when giving it some gas and on the move. Not too loud either, it's perfect (for me at least)

Clip: Clip1.mp4

Images:

 

[Big Blue]

Nice work @Fadyasha ; That looks & sounds good.

 

[JeeperSleeper]

Ive been considering this myself. I am inrerested to hear of MPG changes, mds changes, or anything else you notice once you have ran it a little more.

 

[andreve1964]

I did the rear muffler delete a few months ago and there where no codes or affects to anything. Just a slight improvement in the sound, but not by much.
Fuel consumption has not changed

 

[Big Blue]

I did the rear muffler delete a few months ago and there where no codes or affects to anything. Just a slight improvement in the sound, but not by much.
Fuel consumption has not changed

The muffler provides the engine needed back pressure; Never a good idea to completey do away with it, in my opinion.

That being said, I'm glad you haven't experienced any negative effects.

But, I would not be surprised if you do, somewhere down the road.

 

[andreve1964]

Hi BigBlue
To be clear I am not referring to the main muffler removal, just the rear Resonator/2nd muffler..

 

[Big Blue]

Hi BigBlue
To be clear I am not referring to the main muffler removal, just the rear Resonator/2nd muffler..

I'm not sure what you're referring to as the "main muffler"......are you referring to the Catalytic Converter?

There is only one muffler that I'm aware of, which is very near the end oif the tail pipe, I'm assuming that's what you removed.

 

[rblapham]

No there are two mufflers so to speak on Commanders, the back one by the back wheel is technically called a resinator.
See this picture of the underside.

 

[Big Blue]

No there are two mufflers so to speak on Commanders, the back one by the back wheel is technically called a resinator.
See this picture of the underside.
View attachment 45169

Gotcha, now that I'm sitting here thinking about it, that makes sense.

I've seen them both, the light-bulb just never came on.....LOL.

 

[Big Blue]

I'm not sure what you're referring to as the "main muffler"......are you referring to the Catalytic Converter?

There is only one muffler that I'm aware of, which is very near the end oif the tail pipe, I'm assuming that's what you removed.

I retract my previous statement @andreve1964 I see what you're talking about now.

That was a complete brain-fart on my part, my apologies.

Thanks @rblapham

 

[Big Blue]

No there are two mufflers so to speak on Commanders, the back one by the back wheel is technically called a resinator.
See this picture of the underside.
View attachment 45169

So, by having this installed, I deleted the rear resonator.

MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust System

Jeep Commander (XK) 06-09 V8-4.7L

afepower.com

 

[rblapham]

So, by having this installed, I deleted the rear resonator.

MACH Force-Xp 3" 409 Stainless Steel Cat-Back Exhaust System

Jeep Commander (XK) 06-09 V8-4.7L

afepower.com

Yuper - that muffler is about the size of a VW

 

[Big Blue]

Yuper - that muffler is about the size of a VW

Yeah the muffler is large;

When you really stop & look at it, the Commander's stock exhaust system, has a pretty odd design compared to other vehicles I've owned.