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Old 06-19-2014, 06:51 AM   #1
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real world exhaust question...

hello;
is there anyone that can rive me real world daily driver advice on a axle back exhaust?
here is the deal... I LOVE the look of the duel exhaust tips out the rear of a jk However I don`t want much more sound...
I`ve had the chevy v8`s with glasspacks and true duels, I also had the chevy duramax with 3 inch down pipe to 4 inch strait pipe...
I really don`t want much more sound just the duels sticking out the rear...
is there an exhaust out there that is not overly loud? thanks

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Old 06-23-2014, 03:40 PM   #2
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Well--I felt the same way. However---I ordered the Gibson cat back dual (from amazon---ss version $440 with tax and shipping-----$100 cheaper than anyone else) and it looks great! It took a couple weeks to get used to the sound---not a great increase---but--an increase. Does sound really nice.


good luck

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Old 06-23-2014, 06:33 PM   #3
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I installed a Magnaflow 15160 and I couldn't be happier with it. It has a wonderful low end growl to it without being loud and obnoxious.
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Old 06-23-2014, 11:43 PM   #4
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Quote:
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I installed a Magnaflow 15160 and I couldn't be happier with it. It has a wonderful low end growl to it without being loud and obnoxious.
x2. I just finished driving it 4 hours each way from VA to Bantam jeep Fest and it was fine for the trip. I could hear it more on inclines since the Jeep would accelerate, but in the cruising parts, it's just enough to know it's there, but not loud or obnoxious and no drone.
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Old 06-24-2014, 01:11 AM   #5
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Other than an increased db and looks is there any improvement with drivability using an after market exhaust?
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Old 06-24-2014, 10:44 AM   #6
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I also have the Gibson. I love the way it looks and sounds. It isn't overly loud at all but you know it's there. Gives the Jeep a 'proper' sound, IMO.
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Old 06-24-2014, 11:18 AM   #7
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Dynomax is cheap, easy and not loud. Plus, it's all stainless and has a 90 day money back guarantee. They are a sponsoring vendor here, so maybe you can work out a deal. I got $50 visa rebate card on mine, came out to $139 after rebate. Took me 45 min to uninstall the old and install the new. Took this pic before adjusting the tips to level out the duals.
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Old 06-24-2014, 11:27 AM   #8
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I just installed the Redrock axle-back the other week. I'm not sure it's not a private label from one of the more recognized brands, but either way, it sounds and looks great and wasn't too pricey.

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Old 06-24-2014, 05:06 PM   #9
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Old 06-24-2014, 06:25 PM   #10
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Quote:
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Other than an increased db and looks is there any improvement with drivability using an after market exhaust?
I experienced a noticeable decrease in throttle lag and got a slight boost of 1.1mpg.
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Old 06-24-2014, 09:22 PM   #11
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x2. I just finished driving it 4 hours each way from VA to Bantam jeep Fest and it was fine for the trip. I could hear it more on inclines since the Jeep would accelerate, but in the cruising parts, it's just enough to know it's there, but not loud or obnoxious and no drone.
Make that x3. Maybe my favorite on-road mod so far. The sound is unmistakeably there, but NEVER at all droning or loud. Sounds nothing like a V8 truck.

I am super sensitive to loud and droning exhaust. I bought a used 911 Turbo last year with a $5000 B+B header and exhaust set-up. I couldn't live with it even a month. Had to go back to an OEM muffler (911 Turbos are very hard to not get drone with anything but OEM.) So I know what you're talking about, and I can promise the Magnaflow won't give you problem. And it looks great also.

Oh, and Doc Detroit, I don't doubt that you saw a 1.1mpg increase in mileage -- not calling you out at all. I do, however, believe with all my heart that the vast majority of any improvement you have seen is nothing more than incidental, not related to the exhaust at all. Case in point -- I reset my MPG gauge when I installed the Magnaflow; went from 17.4 to 15.8 in the couple of weeks since I installed it. Somehow, I don't think the muffler cost me an MPG-and-a-half.

Doubtful that Jeep would surrender a true 1.1 mpg if it was as easily gotten as that exhaust you've got.
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Old 06-24-2014, 11:17 PM   #12
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I agree. I've seen some crazy numbers thrown out there about mpg increases from these exhausts. I think I may have gotten a few tenths mpg increase on the highway from mine. The more likely scenario, though, is that I lost a few from stomping on it just a wee bit harder so I can hear that exhaust roar a little!
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Old 06-25-2014, 09:03 AM   #13
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Not to hijack your thread, I am totally in your shoes when it comes to looking for a new dual exit exhaust, but does anybody know how jeep looks at aftermarket exhaust systems with regard to warrantee?
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Old 06-25-2014, 11:33 AM   #14
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They cannot possibly have any objection to a system like the magna flow that literally replaces the stock muffler from the clamp back. If you start replacing the cat converter with a high flow unit, they might not repair any CELs under warranty, since aftermarket cats and O2 sensors can throw CEL codes. But with just the muffler, you shouldn't have any problem. People have been replacing OEM mufflers since the car was invented. It's a wear item.
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Old 06-25-2014, 12:17 PM   #15
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They cannot possibly have any objection to a system like the magna flow that literally replaces the stock muffler from the clamp back. If you start replacing the cat converter with a high flow unit, they might not repair any CELs under warranty, since aftermarket cats and O2 sensors can throw CEL codes. But with just the muffler, you shouldn't have any problem. People have been replacing OEM mufflers since the car was invented. It's a wear item.
Makes sense. Thanks. So are there any real world MPG gains to be had with after market exhausts on these jeeps?
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Old 06-25-2014, 01:08 PM   #16
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Dynomax is cheap, easy and not loud. Plus, it's all stainless and has a 90 day money back guarantee. They are a sponsoring vendor here, so maybe you can work out a deal. I got $50 visa rebate card on mine, came out to $139 after rebate. Took me 45 min to uninstall the old and install the new. Took this pic before adjusting the tips to level out the duals.
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Old 07-10-2014, 02:14 PM   #17
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Dynomax is cheap, easy and not loud. Plus, it's all stainless and has a 90 day money back guarantee. They are a sponsoring vendor here, so maybe you can work out a deal. I got $50 visa rebate card on mine, came out to $139 after rebate. Took me 45 min to uninstall the old and install the new. Took this pic before adjusting the tips to level out the duals.
I like this very much................
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Old 07-10-2014, 03:27 PM   #18
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Go with the dynomax comp evolution. Cheap, small, and sounds better than systems 3x the price. I effin love mine!!!
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Old 07-10-2014, 04:02 PM   #19
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I opted for the Dynomax 39523 cat back system.
Great price, 90 day $$ back guarantee

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