Mufflex 24" need to be welded on?
Veteran
Joined: Nov 2010
Posts: 348
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Mufflex are crap. Way overpriced and those clamps are nothing but a pain in the butt. I struggled with my Mufflex 14 for about 3 months. It'd constantly come loose and start rattling it was vibrating it's self off. I got busy for a couple of weeks there and couldn't keep it tightened. Even though I'd cut additional slits in the pipe to help with the compression of the clamp, it still managed to work it's way off. The passenger side exit pipe worked it's way out and dropped while I was driving. The hangers kept it from hitting the ground though thankfully or it would have made a hellva mess. I tighten it back up and two days later had the entire muffler replaced with a Flowmaster 40. The Mufflex went in the muffler shop's recycle bin, and good riddance.
There are plenty of folks on here that have had similar issues. Mufflex are crap, but since you've already spent the cash on one, save yourself some headache and get it welded on ASAP.
There are plenty of folks on here that have had similar issues. Mufflex are crap, but since you've already spent the cash on one, save yourself some headache and get it welded on ASAP.
Veteran
Joined: Nov 2010
Posts: 348
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Did mine in the driveway with my little 110v Lincoln wire feed. Not the prettiest "text book" welds but it ain't going nowhere. Can't beat having a little 110v welder around. I learned on a "stick" welder as a teen working for an awning and canopy shop, but MIGs are so easy it's like cheating.
I only WISH i could weld that good...!!!!!!!!!!!!!! lol
Really buddie, that is an azzkickin weld job, that ain`t goin no where dude
All Star
Joined: Jun 2009
Posts: 975
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From: San Antonio, TX
The new Flowmaster is welded on by the muffler shop. That puppy isn't going anywhere. I also had them remove the resonators while they had the truck up on the lift. Overall I like the sound of the Flowmaster more. It's not a huge difference, but noticable if 30 minutes before you were in the same truck with the Mufflex.
Veteran
Joined: Nov 2010
Posts: 348
Likes: 0
The new Flowmaster is welded on by the muffler shop. That puppy isn't going anywhere. I also had them remove the resonators while they had the truck up on the lift. Overall I like the sound of the Flowmaster more. It's not a huge difference, but noticable if 30 minutes before you were in the same truck with the Mufflex.
had you welded the MUFFLEX in the first place, that would have saved you alot of trouble and money
Anyhow, glad you like the sound and your happy...
these HEMI`s surely doooo sound sweet when the stock system is uncorked and have better sounding mufflers
Veteran
Joined: Mar 2009
Posts: 498
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From: back woods of Chester County PA
I cut a slit on opposite side of each of the mufflex original ones , about the width of two jig saw blades. No problems for 35k miles now. Why buy the mufflex retro only to have to take a trip to an exhaust shop anyway, just buy the magnaflow muffler and save the 100 or so bucks...
Professional
Joined: Sep 2009
Posts: 101
Likes: 0
From: Oshawa Ontario Canada
Mufflex QUALITY?
So I installed a Mufflex 24" on my Factory dual Hemi yesterday. Every time I drive my truck, the forward part of the muffler slides about 1/2 inch back on the pipe. This has happened three times. I have tightened the clamp to the point that I fear it will snap and it is still slipping. Has anyone else had this issue? I am guessing I will just have it welded on.
Administrator
Joined: Jul 2007
Posts: 24,686
Likes: 21
From: South Georgia/East Florida
Last time I posted that pic, somebody had to go and put up a weld they did that looked like a row a quarters all laid out. Might have been on another site, don't remember, but it was a perfect weld. Damn show-off! But I think he used a TIG. There are guys who can MIG like that, but they are few and far between. Only type of welding I don't know how to do is TIG. Would love to learn...
BTW: important note. Don't slide under a truck and weld a muffler that is basically 18" above you on an 80* day wearing a sleeveless T-Shirt. I posted pics up in 3rd Gen last year when I welded this where I looked like I had chicken pox and my neck looked sunburned as hell, LOL...
Last edited by HammerZ71; Dec 28, 2010 at 12:35 PM.