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Exhaust 5.7 HEMI Exhaust Discussion


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  #1  
Old 10-09-2011, 03:00 AM
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Question exhaust

I have a 2007 dodge ram 4X4 with the 5.7 hemi. I put a magnaflow single to double muffler on it with stainless tips, but I want to make it a little bit louder. I had the two mufflers in the rear removed, but there is what i believe a third muffler right under the passenger floor, I want to know if it really is a muffler or a catalytic converter?
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Old 10-09-2011, 03:06 AM
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The cats will have o2 sensors if they don't they might be resonators.
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Old 10-09-2011, 04:45 AM
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Thanks, I'm not sure why dodge needed to put so many resonators on their trucks, but by removing the ones I have already I've increased my gas mileage by 3 mpg.
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Old 10-09-2011, 05:53 AM
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Wow that much?! Yea they kinda go over kill. They try to make them as quiet as possible lol
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Old 10-09-2011, 12:43 PM
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Same here..no resonators, Magnaflow single in/dual out muffler, AFE intake and a Predator all helped to improve my highway mileage by 4+ MPG.

I found two resonators on mine.
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Old 10-09-2011, 05:46 PM
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My truck was very quiet when I bought it, and that's why I put a different exhaust on it.
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Old 10-09-2011, 05:51 PM
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^^^^ Yup ^^^^ So was mine.
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Old 10-09-2011, 05:53 PM
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Get an e cutout and make it loud when you want and quiet when you want.
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Old 10-09-2011, 07:18 PM
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+1 on the cutout. It's the best of both worlds.

And all the resonators were more to keep the MDS hidden than overall sound down. Notice that the 4.7s are actually louder than the Hemis with factory exhaust.

Granted, when I had my 07 quadcab Hemi, it had a Flowmaster 40 with turndowns about 3 days after I bought it and the MDS was VERY noticeable. I had to ride around with tow/haul on to keep from sounding like a Subaru.
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Old 10-10-2011, 01:19 PM
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I took of my cats and straight piped it to a cherry bomb andtook off the tail.pipe and put a right turn pipe out
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