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Exhaust 5.7 HEMI Exhaust Discussion


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  #1  
Old 06-03-2014, 11:24 AM
Bigwheels Bigwheels is offline
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Default Magnaflow louder than flowmaster

I just bought the 18 inch magnaflow muffler. Surprisingly its allot louder than my flowmaster 70 series. They told me it would be more mellow but the drone is worse. Anyone else ran into this? Thanks
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Old 06-03-2014, 11:43 AM
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Generally the shorter case mufflers will be louder and drone more. The first set of Magnaflows(they were longer than 18") I put on my Avalanche got real loud after the packing blew out of them, which only took a couple of WOT blasts. But that is with twin superchargers blowing through them. I went to a set of Flow Pro 22" chambered units which were more quiet at first, but also got loud after the first 100 miles or so.

Next up are FM Super 50's.
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Old 06-04-2014, 11:26 PM
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Magnaflow 14" is definitely mellower than a Flowmaster 40...I cant speak for a MF 18" vs. FM70.
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Old 06-05-2014, 06:31 AM
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I have the MF 18 and it's perfect. no drone at all.
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Old 06-06-2014, 05:41 PM
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Quote:
Originally Posted by Bigwheels View Post
I just bought the 18 inch magnaflow muffler. Surprisingly its allot louder than my flowmaster 70 series. They told me it would be more mellow but the drone is worse. Anyone else ran into this? Thanks
Is the rest of the exhaust stock? I wouldn't think a new MF(they do get louder over time) would be that loud on a stock exhaust with cats. But it could definitely be louder than a FM 70 which is FM's quietest.

Not sure about the mike location in this comparison video as even the Super 10 mufflers seem more quiet than my Av was with long case Magnaflows or Flo Pros. Will get a vid with my FM Super 50's after install next week.

No modding plans yet for my new 2500 CTD that I pick up tomorrow.
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