Stock Muffler

[OffRoadMedic392]

Do you have a picture of caliper paint?

https://www.amazon.com/Dupli-Color-EBCP10200-Black-Caliper-Aerosol/dp/B001DKPOKW/ref=sr_1_5?dib=eyJ2IjoiMSJ9.k6NNQ25z-P1KEiUsZKckC8_VnsTLnxBELx4b8ZoGD2eJu9b31vcl-Iemq3h0HkG2XpW6m1akRm8c-O5-az3-baqi6m07lGMDIjZUMd3g_xQ4oZLSqb0F8FxhB_MP7bzJLfucJegl-vUe1eTirdBRjNi5AOzYHqEuM2enwv8nkO9_xfuAAr2sT5xD5e5O8mqARrIyOgYHEEbNkfRv-XinfU1q0XLdfAdsXCtrnsRLOO7rTeU0Q1HfC5BK0Bke-pc8QLMaYEV_lFDmFYSwzO7_rv727kI8XteFreOokGEEAow.wRrqaFl5vh0Ki_uiNrZbySH9R5LJL_lQv6mVUNJddHc&dib_tag=se&keywords=gloss+black+caliper+paint&qid=1768414190&sr=8-5

I haven’t touched the stock muffler but did install the MRT h-pipe deleting the resonator. Sounds awesome. Louder than stock but no drone and not annoying at all.

x2 on the MRT H-pipe! I pulled up the car wash last night and the guy asked me what sort of tune I had to get all the burbles and pops . I told him none, just a true straight 3' exhaust pipe leading to an open muffler with cut off valves.

 

[Earl 392]

https://www.amazon.com/Dupli-Color-EBCP10200-Black-Caliper-Aerosol/dp/B001DKPOKW/ref=sr_1_5?dib=eyJ2IjoiMSJ9.k6NNQ25z-P1KEiUsZKckC8_VnsTLnxBELx4b8ZoGD2eJu9b31vcl-Iemq3h0HkG2XpW6m1akRm8c-O5-az3-baqi6m07lGMDIjZUMd3g_xQ4oZLSqb0F8FxhB_MP7bzJLfucJegl-vUe1eTirdBRjNi5AOzYHqEuM2enwv8nkO9_xfuAAr2sT5xD5e5O8mqARrIyOgYHEEbNkfRv-XinfU1q0XLdfAdsXCtrnsRLOO7rTeU0Q1HfC5BK0Bke-pc8QLMaYEV_lFDmFYSwzO7_rv727kI8XteFreOokGEEAow.wRrqaFl5vh0Ki_uiNrZbySH9R5LJL_lQv6mVUNJddHc&dib_tag=se&keywords=gloss+black+caliper+paint&qid=1768414190&sr=8-5

x2 on the MRT H-pipe! I pulled up the car wash last night and the guy asked me what sort of tune I had to get all the burbles and pops . I told him none, just a true straight 3' exhaust pipe leading to an open muffler with cut off valves.

Cool thanks

 

[riverjeep]

I’ve been wondering about the exhaust paths through the stock muffler and could not find any info. I was curious how muffled the bypass path is. So, today I took my muffler off and looked inside.
The primary paths through the muffler are the bypass paths. They are perfect mandrel bent 3” pipe from inlet to outlet. The angles are also non restrictive despite the inlet pipes coming in at 90°. Immediately after the inlet pipes there are nice mandrel bent radius pipes to direct the flow to either side. Then it’s straight out into the bypass valve. In the straight length of pipe, there’s a 2” hole that allows exhaust to enter the muffler cavity when the valves are closed.
So, if you’re considering ditching the muffler to make more power, dream on. There’s no restriction at all. I attached two photos. I shined a flashlight into the inlet and took a photo of the outlet. Then I shined the light into the outlet and took a photo of the inlet. As you can see, there’s nothing in the way. I also dropped a large nut through the muffler. It came right out.

There’s still the fact that the muffler hangs down and the tips hang down even lower. The tips can’t simply be rotated because there are alignment pins. I ground off the alignment pins and rotated the tips more horizontal. View attachment 52131View attachment 52132

Am I understanding you correctly that in the louder mode also called bypass mode it is basically just a 3 inch unobstructed pipe through the muffler?

 

[bluej]

I plan to do the same, I took mine off with ease when I painted them black and thought this would be an easy solution to protect the tips.

Have you noticed any difference in sound "profile" as the exhausts are facing to the outside with the tips off as opposed to facing rear with the tips on.

I don’t notice any difference in sound, the only thing I was worried about was maybe exhaust fumes circulating around, but I’ve never noticed that either. The Jeep still sounds great with the tips off.

 

[Keithbickford]

Am I understanding you correctly that in the louder mode also called bypass mode it is basically just a 3 inch unobstructed pipe through the muffler?

Exactly.

 

[riverjeep]

Exactly.

Thanks for the info!