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Exhaust 4.7L Exhaust Discussion


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  #1  
Old 10-21-2014, 12:49 AM
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I'm fixing to purchase an exhaust. I know it's mainly about sound preferences than anything else but is there one I should stay away from or one that provides more performance over another? This will be my first time to do any type of exhaust on a vehicle and I'm clueless. I was leaning towards flowmaster Outlaw or American thunder, but I just watched a few clips of the MBRP cat-back system and thought it sounded really well. Anyone else use or have any experience with these? I like magnaflow sound but none of the ones I found had a split side-rear exit. I don't have the bumper with exhaust cut outs so would a rear exit look funny sitting under the bumber without them? Most of the exhaust clips are all starting to sound the same.
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Old 10-21-2014, 01:01 AM
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I started out with a magnaflow 22" on my 4.7 and immediately did not like it, I wanted something throaty and the magnaflow was very tame. Switched it out for the American thunder flowmaster catback. I eventually added a dual bumper and had a local shop move the pipes and I put some 3.5" tips I had sitting in the garage from an old mustang. One grip with the FM exhaust is the tiny 2.5" tips! My 3.5" tips are too small as I is!

Here is my truck

http://youtu.be/EufYruQLKEU
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Old 10-21-2014, 01:46 AM
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sounds very good. think I've seen that clip during my "research". have you heard an outlaw next to yours? much difference? I don't want to be obnoxious but I was a good low rumble. the American thunder is where I've been leaning but after hearing the MBRP, I am torn.
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Old 10-21-2014, 01:46 AM
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Old 10-21-2014, 01:55 AM
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Are there much difference between chambered and straight mufflers as far as performance goes? I know FM is chambered and MF is straight. not sure on others
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Old 10-21-2014, 01:56 AM
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Old 10-21-2014, 04:40 AM
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well, scratch that. Thought they made it for the 4.7 but only the Hemi... hate having the v8 ram stepchild. I think I'm going to go with this instead if people who have owned similar can give me some feedback. It's the 14" 3" downpipe SI/SO system. Will this be obnoxiously loud or have too much cabin noise? It's either this http://www.magnaflow.com/02product/s...ne=all&id=4589
or the 18" dual-same side exit that should have a little less rumble/cabin noise but still have a nice, aggressive tone.
http://www.magnaflow.com/02product/s...ne=all&id=4585

opinions?
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Old 10-23-2014, 11:02 PM
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The 4.7 and Hemi exhausts interchange after the mid pipe.
If it fits a Hemi truck,it fits your 4.7 truck
I ran a Magnaflow under bumper kit for awhile,actually looked not bad with the 3.5" tips
On a 4.7 i doubt you'll notice any differance power wise between a straight through versus a chambered design muffler,not enough exhaust flow from a 4.7
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Old 10-23-2014, 11:13 PM
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I had a 2007 with the 4.7. I had a single in/ dual out single chamber flowmaster with tips split under the bumper. Man did that thing sound mean! I loved it. People could always tell when I drove by because of the unique rumble. 4.7's are slower than a turtle in a snowstorm... but they can sound pretty awesome. I currently run a true dual set up with 2 single chambers... so I'm all about that design.... plus they are so compact and lite.
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Old 10-24-2014, 05:34 PM
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why is it that so many companies have some for 4.7, some for 5.7, and some for both if interchangeable? designed to perform optimally with the pressures? difference in round or oval muffler? Are there any advantages to a cat-back system over a muffler/shop install if I plan on dumping it before the rear axel? better to run it at least to a side front of rear tire exit? also plan on getting a magnaflow y-pipe while I'm at it. Should I go for si./s.o. or s.i./d.o. muffler? If I go d.o, should I go 2.5" instead of 3"? I really am a noob when it comes to this stuff. .
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