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Exhaust 5.7 HEMI Exhaust Discussion


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  #1  
Old 02-06-2010, 12:49 AM
TRDon TRDon is offline
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Default Factory rear dual exhaust change

I was curious if anybody has modified the factory resonators (the ones just ahead of the tips) and removed them and how did that sound. I was also directed from a friend to this site http://www.mufflex-performance.com/m...gory_Code=DR09 and said to check it out. Any experience or thoughts? I am a fan of magnaflow on mustangs but have no exhaust experience with the ram as of yet. It is cheap enough and all stainless so I might just shoot for it and get the mid length muffler just to try it out.

Thanks for any information
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Old 02-06-2010, 10:18 AM
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I know a lot of people that have the MDS system on their truck, with an aftermarket exhaust, have noticed a difference of making a horrible sound because they are made differently somehow to handle the 4 cylinder shutdown...So I would ensure that the exhaust system is built for when the MDS is activated so it wont sound like garbage when your driving down the highway...
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Old 02-06-2010, 11:04 AM
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What exhaust system would be made speciffically to work with the MDS?
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Old 02-08-2010, 08:24 PM
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You can also get a programmer which will eliminate the MDS. I have a Gibson exhaust and it doesn't sound bad when the MDS kicks in. I did add a programmer but I have not taken the MDS off, at least I believe i didn't haha
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Old 02-08-2010, 10:08 PM
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Quote:
Originally Posted by TRDon View Post
What exhaust system would be made speciffically to work with the MDS?
The OEM system!

But, if ya got to go aftermarket, I'd go with as large (quiet) a muffler as possible, and leave the OEM resonator(s) on your tailpipe(s). But, not everyone likes 'semi-quiet' either!


I can't say that there is any one MFG that indicates their muffler is specifically made for an MDS system,,,,

Now, with that being said, Corsa (DB) goes about their noise control differently than most all of the other MFG's, and they claim to have a 'drone free' tone,,,
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Old 02-09-2010, 12:05 AM
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I have a Magnaflow cat back dual on mine with no resonators and it sounds just fine,we also have one on the wifes 08 however it seems to get some drone when your off the pedal.
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Old 02-09-2010, 10:36 PM
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I have to agree with griff i took all resenators off and it sounds great
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Old 02-10-2010, 09:02 PM
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If I wanted it perfectly quiet, I would keep the factory exhaust. I took the muffler off my Tundra and kept the resonator and it sounded great. I am looking for a little less sound in my situation that what I previously had. That was a bit much. The link of the direct bolt on exhaust being only 240, I might just order one and see how it sounds.
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Old 02-10-2010, 09:33 PM
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Lots of people have liked the Mufflex. You retain the OEM resonators that way as well. If it still isn't loud enough, you can then pull the resonators,,,

I have heard that the Magnaflows will 'burn in' after a while and become slightly louder,,, You may keep that in mind if you are 'on the verge' of whackin' the resonators the first day you try the Mufflex,,,
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Old 02-11-2010, 05:56 AM
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Quote:
Originally Posted by TRDon View Post
What exhaust system would be made speciffically to work with the MDS?
None, most aftermarket cat back's are designed with a pre-existing muffler the company has on its shelf and chances are they are not designing a specific muffler just for a single engine application. Most of these mufflers are dissipative mufflers such as magnaflow, which contain sound absorbing material to muffle the exhaust pulses. These mufflers are very common due to their relative ease of manufacture and straight-through design for increased flow. Generally this configuration does not have the same sound reducing performance of other designs but they do result in a reduction of backpressure. The factory muffler is a reactive muffler which uses a series of specifically designed expansion chambers to attenuate the high intensity sound pulses. It can be done but chances are, no company is going to take the time to develop a muffler which will work specifically with the MDS system on the Ram. There are some mufflers which will perform better than others but by no means were they intentionally designed to work with the MDS, it is just luck.
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