what aftermarket muffler is everybody using on the 4.0? i currently have no muffler and kind of like the sound without a stock muffler, but i want to add something soon.

 

Alot of people are running all different mufflers it depends on what you want for loudness get a flow master super 44i had one extreme rumble at idle

 

I have a flowmaster 44 on mine and really like it. Here's a video of it.

 

that sounds good. ive always had flowmasters on my truck and love the sound. im looking for a little more straight pipe sound. thinking about just doing a cherry bomb haha.

 

I put a cherry bomb on my last XJ, it didn't sound that bad...do single offset on both ends of muffler, at idle it had a great sound, and didn't backfire when letting off at 55 either...might put one on my current XJ, less than $30...

 

My dad's XJ has a 30" cherry bomb and catless (thanks PO). But talk about bad *** tone! You can hear the rumble inside with the TV on that's how low the tone is! Not too aggressive at idle but open'er up and boy oh boy! It needs a good sized tip so it cackles though

Sorry about the cat mods I want my dad to get one too

 

I've also got a buddy with a 4.0 ZJ that has a cat and a turn-out under the back passenger door. It sounds like a diesel.

 

I think Im going to go get a hi flow cat, a super 44, and make mine sounds dieselish today.
my 2003 gmc v6 sounded like a diesel after I put on the flowmaster and a turndown like mentioned above. sounds bad ***, but too much resonance inside the cab. May seek the 50 series this time

 

im thinking ill leave the cat and do a cherry bomb and run a 3'' tip out the side infront of the rear passenger tire

 

trust me on this one... put a masey ferguson tractor muffler on it. (built in turndown) its not too big and they sound good.

i run a straight pipe and it sounds good with the high profile cam... but for stock id run the MF tractor or a thrush.

and no you dont have to run it like a stack. i just liked the look lol

 

id run a turn down but DE requires the exhaust to have a tip coming out the bodyline somewhere......

 

then get the one without the turndown and run a pipeto the side infront of the rear wheel.

 

Dude that's sick, I'd like my xj to sound like a diesel

 

The cool thing is he parked for a few months and when he fired it up it blew black smoke from the oil settling. That ZJ's been to hell and back on stock suspension and 32s lol. He can't kill it!

 

Dude that's sweet , how'd he make it sound like diesel