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4 Inch Mufflex...muffler differences

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Old 05-14-2008, 07:39 PM
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4 Inch Mufflex...muffler differences

I currently have a 4" mufflex exhaust with a flowmaster muffler. On my new build it just resonates something awful, both in and out of the car. Would a Spintech muffler change this sound dramatically? I am debating whether to try that or just swap back to a 3" system.
Old 05-15-2008, 05:53 AM
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Re: 4 Inch Mufflex...muffler differences

I personally do not like the y-pipe of the Mufflex system. I am in the process of installing and x pipe where the Y is now and running dual 3" to right before the axle where it will merge into the single 4". I just feel that the merge is too soon and creates an exhaust imbalance.

This is the way I have my Cat converter set up and the overall sound quality is superb.
Old 05-15-2008, 07:59 AM
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Re: 4 Inch Mufflex...muffler differences

I also didn't use their y-pipe. I did my own custom one but I did use a spintech muffler. Click the link in my sig to hear.
Old 05-15-2008, 08:08 AM
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Re: 4 Inch Mufflex...muffler differences

I'm not using their y-pipe, I have a MAC y-pipe and MAC headers.I also have a cut-out exiting right after the y-pipe and the sound (while obviously too loud and illegal) is far better, and sounds much more like your car, 1FastZ. I think I'll try the Spintech, I really like your sound. Any idea on the part/model # for the Spintech?

Last edited by Gunner823; 05-15-2008 at 08:12 AM.
Old 05-15-2008, 01:00 PM
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Re: 4 Inch Mufflex...muffler differences

Originally Posted by Gunner823
I'm not using their y-pipe, I have a MAC y-pipe and MAC headers.I also have a cut-out exiting right after the y-pipe and the sound (while obviously too loud and illegal) is far better, and sounds much more like your car, 1FastZ. I think I'll try the Spintech, I really like your sound. Any idea on the part/model # for the Spintech?
Unfortunately, I bought the whole kit with the spintech muffler so I can't be any help there. What I can tell you is, it is the 4 inch kit with the single in/out.
Old 06-01-2012, 07:54 AM
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Re: 4 Inch Mufflex...muffler differences

Has anyone ever put this kit on a dual cat car ? im thinking about buying it do you need to modify anything because my flowmaster 3in exhaust touches everything
Old 06-01-2012, 08:51 AM
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Re: 4 Inch Mufflex...muffler differences

If you want it to sound good, go with 3" true duals.
Old 06-01-2012, 09:01 AM
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Re: 4 Inch Mufflex...muffler differences

Why don't you guys like the mufflex y pipe?
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