Really bad experience with Flowmaster muffler

• Aug 20, 2017

• #1

NJ4X4

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My Flowmaster muffler completely rusted through one of the pipes on the outlet side. The other one is just about rusted through. This muffler came on my 2013 Rocky Ridge Ram which was purchased new in March 2014 and right now I have 36.400 miles on the truck. I'm not exactly sure what Flowmaster model this one was, but I think it should have lasted a lot longer than this! It seems like this was a muffler replacement only....similar to the Mufflex / Magnaflow kits. The remaining OEM portion of my exhaust is still in very good condition and no where near needing replacement. I live in the Northeast where we see snow and salt / brine covered roads in the winter, but I always try to get to a powerwasher after each storm. Anyone else have this issued with their Flowmaster muffler?

 

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• Aug 20, 2017

• #2

Nick@GotExhaust

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Flowmaster normally uses aluminized steel. In the northeast that usually wont hold up for long. stainless steel is the only way to go in the NE. I live in NY, I only buy stainless steel exhaust components, even for my 92 Mustang which doesn't even move in the winter months.

We always suggest at least 409 stainless if not a 304 stainless product for those areas. We got some options in stock and ready to go if you need someting

 

Last edited: Aug 20, 2017

• Aug 20, 2017

• #3

muscleram

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Always buy magnaflow..... lasts longer than any vehicle I've ever had. Flowmaster does that in Canada real fast. My buddy had so many sets in the time I had 1 magnaflow cause he liked the sound better.

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• Aug 20, 2017

• #4

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NJ4X4

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The aluminized steel doesn't work here. Honestly, I wouldn't use it anyplace. I did a lot of research today...was gonna get a cat back Borla system....which is 304ss. But, since the OEM portion is still good, I ordered a Mufflex kit. Not 304SS.....but it's 409. I had one on my last Ram and it held up fine. I looked at a friends Ram today to see how his Mufflex kit was holding up.... still looked fine with over 100K miles on the muffler....just surface rust..no structural damage at all. No more Flowmaster for me... Any full exhaust I purchase will be Borla.... one million mile warranty on them.

 

• Aug 20, 2017

• #5

69GWC

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I have had one flowmaster, it rusted out way to soon and wont buy another.

 

• Aug 20, 2017

• #6

Hemi395

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I've had my Mufflex for 4.5 years and it has seen 3 NE winters. Only has some minor surface rust common to 409 ss

 

• Aug 20, 2017

• #7

F

Ferro

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I have never had a problem with Flowmaster and has sean all kinds whether here in Chicago.

 

• Aug 20, 2017

• #8

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NJ4X4

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Ferro said:

I have never had a problem with Flowmaster and has sean all kinds whether here in Chicago.

Click to expand...

Keep your eye on it. I'm under my truck periodically and knew mine was rusting pretty bad....but had no idea it would come apart at 36K miles. The only way I realized it broke was one of my exhaust tips was sitting crooked...

 

• Aug 20, 2017

• #9

Nick@GotExhaust

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If your truck sees salt you have to watch what your buying with Flowmaster. Most of the kits and mufflers are aluminized steel but they do offer 409 which will hold up fine.

 

• Aug 20, 2017

• #10

N1ck

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I've ran a 40 and 50 series on two different trucks, I optd for the stainless versions for a small difference in cost.

You're going to run into the same issues with many different manufactures whether it's Flowmaster, Thrush, Jones, Flo Pro, etc.

 

Last edited: Aug 20, 2017

• Aug 21, 2017

• #11

Firebird

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Wow, you guys up north have it rough! A Flowmaster here in the south will last well over 10 years.

 

• Aug 21, 2017

• #12

Casper

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So does that boat anchor FCA calls an OEM muffler

Doesn't mean I was willing to keep it though.

 

• Aug 25, 2017

• #13

JasonK94Z

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They don't call them Rustmaster for nothin!


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• Aug 26, 2017

• #14

smiley

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JasonK94Z said:

They don't call them Rustmaster for nothin!


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Click to expand...

My thoughts exactly. Complete garbage. If you don't run stainless it is a waste all that other stuff just doesn't last here maybe 2 years tops.

 

• Dec 25, 2017

• #15

Chap

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Mine is a 2014 Altitude, the passenger side muffler outlet rotted right through at the clamp last month. Bought the truck new in 2015, so not even 3 yrs old yet. I just bought a whole new Flowmaster outlaw system. Supposedly all stainless. It does sound awesome.