Fixing a Rusted and Broken Muffler

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
JRMart1n738
Posts: 2
Joined: Tue Sep 08, 2015 8:17 pm
Car: 2007 Infiniti M35x

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A few days ago, I heard a loud sound whenever I put my foot on the gas. I recently looked under the rear of my car and noticed the muffler very rusted, had broken off, and was hanging low on one side. I took pictures as well. What is wrong and how can I fix this without spending a lot of $$$?


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Ilya
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Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. Former owner of a 2007 M35x. Also take care of my wife's 2016 QX60.
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Welcome to the forum.

Your flange between the connecting pipe and the muffler probably rusted, which means you will have to get new ones welded in. If the muffler itself is fine, shouldn't be more than $100 to fix at a shop. If the muffler is real bad, you'll need to get that too. They aren't terribly expensive, but it's not a $20 fix.

JRMart1n738
Posts: 2
Joined: Tue Sep 08, 2015 8:17 pm
Car: 2007 Infiniti M35x

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Thanks for your reply. I have been attempting to upload a pic of the problem from both a PC and my phone. I am having trouble doing this. Help pls!

EdBwoy
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jedgington
Posts: 49
Joined: Wed Aug 01, 2007 4:40 pm
Car: 2006 M35x
Location: Cedar Falls, IA

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I recently had this done at a local shop. They just re-welded the pipes (both sides), and replaced a piece that was too rusted. It was about a $100 job all together, and done in a couple hours. Worked great.

BTW, the mufflers were freakin' expensive, something like $600 each. Would have had to order OEM parts. $100 weld job is the way to go if your mufflers are still ok.

Wangtang408
Posts: 579
Joined: Wed Apr 17, 2013 11:32 am
Car: 2006 Infiniti M35
Location: NorCal

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Do a muffler delete + bigger tips = >$250

Tracer X
Posts: 15
Joined: Fri Nov 20, 2009 1:42 pm
Car: 2006 M35X

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I had mine welded at a local muffler shop for about 100 bucks. Looks and works perfectly.


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