TJ mid-arm muffler placement

[Nick21]

If seen many photos of LJ with exhaust/muffler setup after installing the savvy midarm. However with my TJ the space requires is much smaller.

From what I'm seeing I will likely have to move the cat forward to make room for the muffler.

If you have does this please post some pictures

 

[jjvw]

About the best you can do on a TJ is a small bullet style muffler somewhere between the center skid and the rear axle. There isn't much room.

 

[Nick21]

About the best you can do on a TJ is a small bullet style muffler somewhere between the center skid and the rear axle. There isn't much room.

Looks like something like this might be my best option, thanks

Dynomax Performance 24234 Dynomax Race Bullet Mufflers | Summit Racing

Free Shipping - Dynomax Race Bullet Mufflers with qualifying orders of $109. Shop Mufflers at Summit Racing.

www.summitracing.com

 

[mudmaster]

I may have removed the cat............

 

[PNW_LJ]

About the best you can do on a TJ is a small bullet style muffler somewhere between the center skid and the rear axle. There isn't much room.

How much louder is it over stock?

 

[jjvw]

How much louder is it over stock?

This much

 

[psrivats]

This much
View attachment 426116

wrong scale

 

[jjvw]

wrong scale

View attachment 426117

I measure loudness in beans like an adult, but I was trying to remain accessible for our young fellow traveler. 🤣

 

[psrivats]

I measure loudness in beans like an adult, but I was trying to remain accessible for our young fellow traveler. 🤣
View attachment 426119

Are you sure you are not an AI language model?

 

[PNW_LJ]

I measure loudness in beans like an adult, but I was trying to remain accessible for our young fellow traveler. 🤣
View attachment 426119

I don’t like beans. They cause too much unfavorable “exhaust” gas.

 

[Nick21]

I may have removed the cat............

Does it still run fine? Mine does have an O2 downstream of the cat

 

[mudmaster]

Does it still run fine? Mine does have an O2 downstream of the cat

It runs fine, no CEL. Mines an 06, the 2 other cats have pre and post O2 sensors.

 

[jjvw]

Does it still run fine? Mine does have an O2 downstream of the cat

The third cat in the 03-06 TJs is not monitored by the PCM. The Jeep has no knowledge if it is there or not.

 

[Nick21]

The third cat is not monitored by the PCM. The Jeep has no knowledge if it is there or not.

Mine is a 98 so it only has the 1 cat in it

 

[jjvw]

Mine is a 98 so it only has the 1 cat in it

Then yours is monitored by the PCM.

 

[bty34]

Im not a fan of the sound of the spintech, but it fits under the skid with a cat.

 

[mrblaine]

Im not a fan of the sound of the spintech,

Is anyone?

 

[bty34]

Is anyone?

Robert J. Yates recommended them back in the day. So far I haven't been able to find anything with a similar footprint. Do you have a quieter option you like to use? I tried adding a race bullet up by the starter, but it didn't seem to make any difference.

 

[Wildman]

Im not a fan of the sound of the spintech, but it fits under the skid with a cat.


View attachment 426132

View attachment 426139

View attachment 426142

Too loud? Wrong pitch? What is it you don't like about it?

I'm using a Magnaflow straight thru muffler since nothing else would fit but my cat is more forward that a stock TJ exhaust. I'd like to find something else that would fit but I have even less room between the t-case & frame due to size.

 

[mrblaine]

Robert J. Yates recommended them back in the day. So far I haven't been able to find anything with a similar footprint. Do you have a quieter option you like to use? I tried adding a race bullet up by the starter, but it didn't seem to make any difference.

I'm not so sure that just a straight pipe isn't quieter than those noisy ass things. At least a straight pipe doesn't sound as bad. But no, I have yet to find anything tolerable even doubling them up.