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Removed Stock Muffler

Bravo

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Nice job. Does it sound exactly the same as no muffler?
I would say it sounds the same... perhaps a lil quieter as it exits out the back of the Jeep in a proper location instead of dumping right in front of the rear axle when I removed the muffler
 

ojones7

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Thoughts ? It looks like the end has slots so that it will slip on easier.

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Man, I wish I would have just gone for this one. I went with the Flowmaster due to the looks and hoped the issues others had would be minimal. I was wrong, definite PITA!
 

RockymtnJL

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Thoughts ? It looks like the end has slots so that it will slip on easier.

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My Dynomax just arrived today. I had the Flowmaster version but I didnā€™t want to deal with the poor fit etc, so I returned it. Iā€™ll try to get the DM installed tomorrow and shoot a couple of sound clips.
 

RockymtnJL

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Installed the Dynomax today, and I have to say for only having one bolt to undo, the install sucked. The exhaust hangers were a total pain in the ass. I used 2 different exhaust hanger removal tools, and still fought them for about an hour. I thought about pulling the bolts to the hanger brackets, but they were going to be just as hard to get to, so I decided to fight the hangers and eventually won the battle.

Iā€™ve only done one short cruise so far, but I took the Jeep up to 80mph and once cruising in 8th, I could barely tell a change was made. Any throttle inputs though and the sound is ā€˜significantā€™ . Iā€™ll run it for a week or two and see how it breaks in.

It definitely saves a good amount of weight, and removes a pretty restrictive looking bend the stock pipe has in it right before the muffler. So far Iā€™m happy- you canā€™t really beat it for 100 bucks.

The DM pipe is finished with a down turn and a straight cut. So no frills at all, and definitely not as nice looking as the Flowmaster tip, but itā€™s tucked up high and no one will ever see it really. Bonus that the DM slid right on perfectly, while the FM pipe was a definite no go.

Clip is just a cold start and idle down immediately after tightening the exhaust clamp. I did a few quick revs up to about 2800 rpms or so, and then drove off out of my garage. My Jeep is running the Superchips 91 octane ā€˜Performanceā€™ tune, so it may sound slightly different than a Jeep with a stock ECU. I think the tune causes my Jeep to have a more sensitive throttle and rev quicker. With the tune and this pipe the Jeep is definitely quick, even with my 35ā€ tires it pulls hard and shifts are very quick. Hope this helps some of you decide what to go with...

 
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intentsrig

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So I must be getting old because I painted the stock muffler black and put it back on. It was just too loud..especially in a soft top on longer trips.

I do eventually want to get a smaller muffler that is a bit louder than than factory and either mount it in the stock position or after the resonator. Something a tad smaller and more protected from the rocks.

Oh and not to mention CA now has a 1000$ minimum fine for being caught without a muffler. Also, if you are over a certain decible. Not a fix it ticket any longer. Although since we donā€™t drive Honda civics, we would likely never get pulled over.
 

shacdaddy

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Here's a quick clip of my Flowmaster Outlaw Cat-back:
 

shacdaddy

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How loud is this on highway?
Under normal conditions, you hear it but it's not annoying. If you're climbing or facing a stiff headwind and it downshifts to around 2200 RPM then the drone is substantial.
 

Arasto1

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Under normal conditions, you hear it but it's not annoying. If you're climbing or facing a stiff headwind and it downshifts to around 2200 RPM then the drone is substantial.
Ok, no help from flowmaster to get rid of the drone?

i have someone near me who is selling it pretty cheap so wanted to get some feedback before i purchase it.
 

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shacdaddy

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Ok, no help from flowmaster to get rid of the drone?

i have someone near me who is selling it pretty cheap so wanted to get some feedback before i purchase it.
The only way to get rid of the drone would be to remove it lol. I don't mind it at all. Sounds mean.
 

WXman

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I've put mufflers on V6s in the past myself, so I can relate.... but guys I have to say, this sounds A W F U L. ;) Just a friend trying to help a friend; It sounds like a 1987 Pontiac Grand-Am I-4 with a bad exhaust manifold. That's literally what this sounds like. It's kind of funny that money is being spent to make a brand new vehicle sound like one that's 30+ years old.

I do understand the desire to eliminate the hard 90 degree turns and crimps and awful bends in the factory exhaust. FCA did a horrendous job on the exhaust system. But, there's gotta' be a better way than the stuff in this thread.
 

Swanny297

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I've put mufflers on V6s in the past myself, so I can relate.... but guys I have to say, this sounds A W F U L. ;) Just a friend trying to help a friend; It sounds like a 1987 Pontiac Grand-Am I-4 with a bad exhaust manifold. That's literally what this sounds like. It's kind of funny that money is being spent to make a brand new vehicle sound like one that's 30+ years old.

I do understand the desire to eliminate the hard 90 degree turns and crimps and awful bends in the factory exhaust. FCA did a horrendous job on the exhaust system. But, there's gotta' be a better way than the stuff in this thread.
For those looking for rear ground clearance the muffler delete is one of the better options - it maintains the mid body resonator and allows for the elimination of the drone most experience with a full new system without a resonator.
 

Litfuse

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I've put mufflers on V6s in the past myself, so I can relate.... but guys I have to say, this sounds A W F U L. ;) Just a friend trying to help a friend; It sounds like a 1987 Pontiac Grand-Am I-4 with a bad exhaust manifold. That's literally what this sounds like. It's kind of funny that money is being spent to make a brand new vehicle sound like one that's 30+ years old.

I do understand the desire to eliminate the hard 90 degree turns and crimps and awful bends in the factory exhaust. FCA did a horrendous job on the exhaust system. But, there's gotta' be a better way than the stuff in this thread.
I agree, sounds like poop. At least the old 4.0 motor sounded good when you threw a muffler on it. This 3.6 just sounds awful.
 

DynoMax Exhaust

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You are correct. :)

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For those looking for rear ground clearance the muffler delete is one of the better options - it maintains the mid body resonator and allows for the elimination of the drone most experience with a full new system without a resonator.
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