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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 08-18-2013, 07:27 AM
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Default magnaflow questions

what is the difference meaning purpose between the magnaflow cat-back system for $800 or just the muffler for 100 bucks. Which muffler is the most popular for the 4.7. I hoping to get at least 1 to 2 mpg gain if possible. thx
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Old 08-18-2013, 03:54 PM
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Muffler is for sound more or less and with the whole cat back system u should see some better overall performance gains. Stock pipes are pretty restricting so the full system will offer better flow.
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Old 08-18-2013, 11:27 PM
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Cat back is where they cut out your current exhaust system and install new pipes and muffler from the cat back. A muffler, for $100 bucks, is cut out and a new muffler is installed. On my 4.7 I got the Maggy 14". You oughta listen to some of the sound clips, then you can decide for yerself which sound you like better.
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Old 08-19-2013, 04:22 PM
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thx , I will go with the bolt on mufflex dods18 from the sound clips on you tube. i was going to order a magnaflow cat back but Iam glad i ask because i cant weld or cut pipe but i got a socket set.
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Old 08-19-2013, 06:00 PM
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Welding is the way to go, but if all you have is a socket set, then that'll have to do. Good luck and have fun. Throw up a pic and a sound clip of it when you're done.
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Old 08-19-2013, 06:28 PM
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What Magnaflow catback model number are you looking at?
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Old 08-19-2013, 07:05 PM
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It was the magnaflow 16386
I guess it not to true cat back because it bolts on just before muffler per the instructions. It looks like rip off because the charge you a lot for ss pipe you all ready have.
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Old 08-19-2013, 07:11 PM
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Looks like a "true" catback to me.

It's only a rip-off if the existing OEM system is identical in every way to the AM catback you're considering [SS grade, pipe diameter, tip diameter, muffler type, etc]

Good luck.
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Old 08-19-2013, 10:01 PM
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Quote:
Originally Posted by RogerRamJet View Post
Welding is the way to go, but if all you have is a socket set, then that'll have to do. Good luck and have fun. Throw up a pic and a sound clip of it when you're done.
There is a way to take the muffler off with a socket set???? I when under there and saw the clamp loosened it and took a few hard whacks at it and nothing even budged. Maybe I had my purse that day but I thought I gave it what I could.
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Old 08-19-2013, 11:17 PM
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Yes, the stock mufflers are held together with brackets, but you gotta remember, 1) they are meant to be super tight and therefore the tolerances are extremely tight as is the bracket and B) that exhaust pipe has been heated up and cooled many, many times. It's not going to give up very easy. Get you some PB Blaster, soak the joint very well and let it soak for a couple hours. You're also going to need a big ass dead blow hammer to pound the muffler to get the muffler off. Just because it's bolted on doesn't mean it's going to be easy. Which is one of the reasons why I had my pipes cut off and the new cat back welded on.
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