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Rusty muffler already?

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Old Jun 13, 2017 | 05:25 PM
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Default Rusty muffler already?
Swapped out the factory muffler for this one just about a year ago. Is this what it should look like? If so, why just on the seams?
Attached Thumbnails Rusty muffler already?-rust1.jpg   Rusty muffler already?-rust2.jpg   Rusty muffler already?-rust3.jpg  
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Old Jun 13, 2017 | 06:05 PM
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Just surface rust on the welds.
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Old Jun 13, 2017 | 06:08 PM
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probably didn't use a stainless filler.
if really concerned, sand it off, spray with a high-temp paint
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Old Jun 13, 2017 | 06:42 PM
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Ok, thank guys. I ran some sandpaper over it and removed about 60% of it. I'll go back over it with a wire brush and drill.
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Old Jun 13, 2017 | 06:47 PM
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You did a whole cat-back system? If so, what brand? I'd not want to buy that.
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Old Jun 13, 2017 | 06:49 PM
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Originally Posted by MichaelInCalifornia
You did a whole cat-back system? If so, what brand? I'd not want to buy that.
his post said he just swapped out the muffler.

looks like this weld was done on the truck with an OA torch and unknown filler.
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Old Jun 13, 2017 | 07:00 PM
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Doesn't explain the same rust on the muffler end. They are rusted so similarly, I suspect its a cat back, and not a particularly non-corrosive one.
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Old Jun 13, 2017 | 07:02 PM
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Just a muffer swap to a Flowmaster Super 44(resonator delete).
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Old Jun 13, 2017 | 07:38 PM
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Last edited by BadFish523; Jun 13, 2017 at 07:45 PM. Reason: Removed
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Old Jun 13, 2017 | 07:57 PM
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Stop buying cheap *** flowmasters. lol
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