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-   -   Magnaflow muffler swap question (http://www.ramforumz.com/showthread.php?t=91007)

eroland7 09-01-2011 05:53 PM

Magnaflow muffler swap question
 
I have a 2011 ram 1500 with the 4.7L. I want to do a simple muffler swap, with turndowns (eliminating the exit tailpipe). I have read good things about the 18" magnaflow mufflers. My current stock muffler is a singel center in/single center out 3" pipes.

My question is: Does it matter if the out is a single 3" center out or a dual 2.5" out if i just want it turned down? I see a lot of people with turndowns elect to go with a single in/dual out and have two little turn downs. Does it make a difference? I only ask, cuz im looking to buy the muffler online myself to save the huge shop mark-up. I was looking at these:

dual out:
http://cgi.ebay.com/ebaymotors/Magna...ht_3919wt_1166

single in/single out:
http://cgi.ebay.com/ebaymotors/3-C-C...ht_1720wt_1166

Sorry for the lengthy post, I just wanna make sure i get the right one. Thanks guys.

eroland7 09-01-2011 06:01 PM

Sry one more question. Also, since 18" magnaflows are shorter than the stock mufflers, do they need to add an extension pipe or anything so the exhaust dumps down in a specific place? Hopefully the place installing it would know this, but im just curious if it matters where the turndowns dump the exhaust. Thanks.

07yt1500thunderroad 09-01-2011 10:35 PM

i got a single in dual out and ran them out the same side...i got mine from performance curve off ebay it only cost $70.00
http://cgi.ebay.com/ebaymotors/3-2-5...item2eb77d0720

snrusnak 09-02-2011 12:53 AM

Either one would be fine, performance won't change either way really. I'd just do the single as I bet you can find it cheaper, and you'd only have to buy one turn down. Only reason to do the duals is if you might add dual exits out the rear in the future. Doesn't matter where the turn down(s) are just use common sense you don't want them dumping right at say anything rubber or plastic as it will melt. In all reality turn downs under the truck aren't a great idea as the exhaust gasses get "trapped" under the truck. Especially when sitting still. Many people do it though it's up to you.

eroland7 09-02-2011 11:41 AM

K, thanks. Ya, I understand that the basic concept of having turn downs isnt really a good idea, but i just think it has such a cleaner look without exit pipes. Anyone have any bad experiences with turndowns? Thanks again for the replies guys!

snrusnak 09-02-2011 11:45 AM

Quote:

K, thanks. Ya, I understand that the basic concept of having turn downs isnt really a good idea, but i just think it has such a cleaner look without exit pipes. Anyone have any bad experiences with turndowns? Thanks again for the replies guys!
Ok, just be aware that it will also be louder. I ran a dumped exhaust before the axle on my ford and after awhile got really sick of it. I agree I don't like to see exhaust pipes, my solution was to keep the stock tail pipe location, you can hardly see it. Or cut it back even a few inches so you can't see it at all. If you're happy with dumped exhaust it's fine then though. It's not as big of a deal with trucks as the bed is separate from the cab so the fumes won't normally make their way into the cab. On a car it can be a bigger issue.

eroland7 09-02-2011 11:57 AM

Ya, Thats why I plan on going with the 18" instead of the 14, cuz a 14" with turndowns would be too loud i think. I was hoping that the 18 with turndowns wouldnt be too bad, and still have a nice deep tone to it.

bombadillo 09-02-2011 12:30 PM

I had a friend weld the 18" stainless steel magnaflow and a new tip for me. I kept the stock resonator on it because I didn't want it obnoxious loud and I have the 4.7 as well I think keeping your factory pipe and putting a tip on while keeping the resonator gives a fantastic sound. It opened it up a bit more if nothing else at the high RPM's and I don't feel like I lost any low end. As for the turn downs, be careful with that because I've had cars with turn downs and I ended up with fumes in the car. No matter how sealed you think they are, when stuck at a stoplight idling, that gas is going somewhere and often times, it is leaking in the cab somewhere. You can't sit at a stoplight with your windows down so think about that.

The 18" gives mine a GREAT sound with a nice burbly rumble, and a vicious roar when I open it up all the way. I got the straight through 2.5" single in 2.5" single out and I'm glad I did it that way. I pulled into dodge and the guy thought I had a hemi with exhaust till he saw the truck. Then he said it was the best sounding dodge 4.7L he's ever heard.

Factory muffler
http://i95.photobucket.com/albums/l1...s/IMAG0485.jpg

Double walled tip I chose. (some like it some hate it)
http://i95.photobucket.com/albums/l1...s/IMAG0367.jpg

http://i95.photobucket.com/albums/l1...s/IMAG0492.jpg

Muffler all welded in
http://i95.photobucket.com/albums/l1...s/IMAG0362.jpg

One more shot a different angle
http://i95.photobucket.com/albums/l1...IMAG0361-1.jpg


All in all, I'd say magnaflow is at least the best start but I'd have a shop do it. Do it once, and pay a few bucks for the quality of the install. If it was a bolt on cat-back I'd say do it yourself but pay the few bucks, have it hung right and don't ever have to think about it again.

Also I'd leave a pipe at least exiting in front of your rear tire but do something that makes the fumes exit somewhere rather than straight down.

eroland7 09-02-2011 01:04 PM

Thanks so much bomb for all the info and pics. I notice you said 2.5" in and 2.5" out. I measured mine and the stock pipes are 3" goin in and 3" goin out. I too have a 2011 ram 1500 with the 4.7, very interesting. Anyway It seems like i have some thinking to do... Thanks again everyone for the input!

eroland7 09-02-2011 01:05 PM

Also my stock muffler is MUCH longer than that one...


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