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Old 07-28-2012, 04:03 PM   #1
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Loose Dynomax VT Catback

I just installed the Dynomax VT catback on my 2012 JK and the exhaust portion is loose. I've tightened the clamps as far as they can go and there is still play on the exhaust canister. (I can wiggle it around with little effort)

All the clamps appear to be the same size, and they're marked that way on the instructions. I took it for a test drive after install, and the exhaust started to sag.

I sure hope once i fix this the sound is better. Taking it for a spin on the road the jeep sounded like Johnny Trans S2000 in fast and furious, eek!

Any help would be appreciated. I've probably installed around 10 catbacks in my day, and have never seen a system this loose after install.

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Old 07-28-2012, 09:33 PM   #2
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You torqued the band clamps to 60 ft lbs?

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Old 07-28-2012, 09:52 PM   #3
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Same Exhaust

I installed the same system on my 2012 Rubicon and my wife was not happy with the tone. It was on less that twenty minutes and I took it off. As far as the clamps go, everything was tight and secure - NO problems with movement and the fit and finish was excellent, just didn't like the sound.

Probably list it on eBay shortly.
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Old 07-28-2012, 10:37 PM   #4
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Im gonna swap the clamps from the cat delete onto the exhaust and see. If that doesn't work I may just go to lowes and buy some smaller ones. The exhaust sizing is compatable with flowmaster 40 series and magnaflow 14 inch. So may switch to the magnaflow if it still sounds crazy once I fix the clamps
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Old 07-29-2012, 12:39 AM   #5
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U can also roll up foil and side it in to make it tighter. I do that to big rigs before.
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Old 07-31-2012, 05:56 PM   #6
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Got a 1/2 inch socket wrench and hardcore deep socket and tightened the crap out of it.

Initial thoughts, don't get this exhaust. The 3.6 sounds silly at 4.5k rpms. 14 inch exhaust sounded awesome on my 5.7L but sounds a little fast and furious on the wrangler.

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