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Old 11-16-2010, 08:47 PM   #1
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Help a Non Gear Head

I know there are many threads about exhaust etc....

My question though is what kind of muffler is on the Jeep JK 2011? I talked to the local muffler guy over the phone and he asked about the off sets. When I looked the out take is in the center of one end. The intake in in the comes in from the side of the muffler. seems kinda different/weird but then again i never really pay attention before.

Can I just get a new muffler or will this mean I need to get a new exhaust?

I was looking into getting the flowmaster 40

I know that it is just ear noise....Not the question at hand.

Thanks

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Old 11-16-2010, 08:50 PM   #2
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If you are going to replace the muffler on a brand new vehicle (which I personally think is ridiculous) why does it matter whats on there now?

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Old 11-16-2010, 08:57 PM   #3
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all they should need to know is how many inputs/outputs and where they are located....other than that it's up to you. the flowmaster will be annoying @ highway speeds, and you more than likely won't have any gains except a little clearance
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Old 11-16-2010, 09:06 PM   #4
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Originally Posted by daggo66 View Post
If you are going to replace the muffler on a brand new vehicle (which I personally think is ridiculous) why does it matter whats on there now?
For educational purposes.... I have never noticed a muffler where the input comes through the middle of the muffler vs the end of it. I just didn't know if this was normal etc and if it was something special Jeep did.

Also not sure what you think is ridiculous. Don't we replace perfectly good parts with new ones all the time?

Wheels?
Tires?
Fenders\Flares?
etc...

I just want something with a little more grrrr to it and from reading on here the muffler is the cheapest way to go.
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Old 11-16-2010, 09:08 PM   #5
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Originally Posted by swingtail82 View Post
all they should need to know is how many inputs/outputs and where they are located....other than that it's up to you. the flowmaster will be annoying @ highway speeds, and you more than likely won't have any gains except a little clearance
swingtail do you have a different one you would recommend? the Flowmaster 50 seemed to be too quite for most and reminded them of the stock.

The 40 just seemed like the one most liked the best.
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Old 11-16-2010, 09:46 PM   #6
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I had a welded-in 40-series on mine and got rid of it in two weeks. Tore off the stocker on the trail, and the only thing I could find on a Sunday was an Autozone 40-series Delta Flow. NASTY resonance around 2K-2300 RPM's, where I spend 85% of my time- F that.

Get a 50-series Delta Flow, if you MUST replace a perfectly good muffler. 2.5" in/out. Offset will reduce noise slightly, as it increases (again, slightly) the distance the gases have to travel. MAYBE 1/4 dB, but it does. Beyond that, rock and roll. Mount it high and tight in to the body to avoid trail damage. Also, if possible, mount the outlet going out behind the right rear tire, instead of the bumper, if you're going to be wheeling- less chance of a crush that way- Mark W.
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Old 11-16-2010, 09:50 PM   #7
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magnaflow tends to be quieter, but I'm afraid it'll sound like crap on a jeep. borla always has a nice tone and isn't too loud, but they're pricey. I would recommend going to youtube and watching some vids then make your choice from there
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Old 11-16-2010, 10:02 PM   #8
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If you want GOOD sound, you're right about the Flowmaster 40, but-

Get a cat-back and the sound is sweet, plus you can relocateit and get rid of that big lump on the assend

Here's mine and sound is "HOT ROD", there's no drone in 2wd, unless I make a mistake of trying to climb a long grade, without having the auto downshift and off-road, no drone, just a kewl exhaust sound



I doubt if there's that much difference between the Banks/Magnaflo/Gibson/Borla, but you gotta get the cat-back for the sound difference-

No power increase, just an earpleasing tone !!

Good luck



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Old 11-16-2010, 10:49 PM   #9
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Quote:
Originally Posted by jb3rry View Post
For educational purposes.... I have never noticed a muffler where the input comes through the middle of the muffler vs the end of it. I just didn't know if this was normal etc and if it was something special Jeep did.

Also not sure what you think is ridiculous. Don't we replace perfectly good parts with new ones all the time?

Wheels?
Tires?
Fenders\Flares?
etc...

I just want something with a little more grrrr to it and from reading on here the muffler is the cheapest way to go.
I change things for better performance or better looks. The fact of the matter is that the 3,8 is a very quiet motor. Engine without a muffler, it's not very loud.

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