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Discussion Starter · #1 ·
I got a quote today from a local shop after telling him that I was interested in the 24" body Magnaflow.

I thought that the right part would be the 12388 (3in./2.5in), but he quoted me for the 12368 (2.5in./2.5in).

Is there a way to confirm which one is the right fit for the truck?

Thanks guys.
 

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I believe the stock pipes are 3 inch inlet with dual 2.25 outlets. I ordered a Muffler with those specs. 22 inch HOOKER Max Flow, Super quite! Wish I would have ordered a Magnaflow 14.
 

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Discussion Starter · #5 ·
Here's the conversation we've been having through email:

ME:
I think that my 2012 Ram 1500 QC is a 3/2.25, though, not a 2.5" in. I just want to make sure whether I'll need that or the #12388 (a 3") before you order, which is what I believe that I've been reading many of the new Ram owners using. Is there a way to check on this before ordering the part?

MUFFLER SHOP:
We would be using adapters/expanders to make the 2.5 in. fit both ends. This is alot easier than expanding 2.24" to 3". Let me know if you have any further questions.

ME:
From what I understand it's not the 3" that would need expanding, but from what I was told, it's the 2.25 that would need to be adapted to the 2.5 and the 3" would fit stock.

Is there a way you could check with the Ram specs on that?

MUFFLER SHOP:
we would be expanding the muffler outlet to 3" to slide over the stock pipe, then using an adapter to jump from 2.25" to 2.5". It could be done the way you mentioned before with the 3" muffler, its just more work and the smaller oulet muffler costs a few dollars less. Essentially you would be accomplishing the same thing either way without sacrificing flow or sound.


What do you guys think?
 

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Hey bud.

You NEED a 3" inlet muffler. No question or doubt there. If they reduce/adapt a 2.5" inlet muffler then it will be restricted and hurt power.

As far as the outlets go, you NEED a minimum diameter of 2.25". If they use 2.5" and adapt it that's fine as it's larger so won't be a restriction.

If you want, send them my response, if they know what they're doing it is very clear.

They may have a larger profit on the 2.5" inlet mufflers or something like that and maybe that's why they want to use that...? I don't know...
 

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Discussion Starter · #8 ·
Emailed him back and let him know I wanted the 12388. I'll try and check the box when I head in there on the install too, just to be sure.

He threw in a 10% discount on top of it, too, so it's as good as installed.
 

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Good deal. Can't wait to hear it, make sure to post pics/video :)
 

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Mufflex inspection legal?

I want to modify my exhaust and have checked out all the Mufflex youtube clips on gen 4 Rams like mine. I have the 2012 Ram 5.7 Hemi QC 4x4 Express and absolutely love the truck. The blatt of the DOD14 really appeals to me but I wonder if it will pass inspection. (I live in Maine and we are an vehicle inspection state) I think the DOD18 will slide by with the right inspection station but not sure the DOD14 will fly. Anyone from an inspection state that has them inspected at the dealership and it passes? Thanks for the anticipated replies.
 

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Curious why you think it wont pass? You'll be running both a converter and muffler so you should be fine. If you were running no muffler then it might not pass.
 

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I have a flowmaster 40 series muffler on mine and it's definitely 3" inlet and 2.5" outlet which they modified down to fit the stock y pipe and I have nothing but good things to say about the work, sound, and performance.
 

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How loud is that in the cab of the truck @ 70mph on the interstate? I don't want to drown out the radio or have problems hearing while talking on the phone.

Sounds great though!
 

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Discussion Starter · #16 ·
How loud is that in the cab of the truck @ 70mph on the interstate? I don't want to drown out the radio or have problems hearing while talking on the phone.

Sounds great though!
If you reallllly listen for it, you can hear it on the interstate, but it's honestly hardly noticeable, which is exactly what I was going for. It's got a nice deep rumble on start up and revving at low speeds, and combined with the CAI it sounds great when you floor it, but for the most part it's really just a deeper version of stock and hardly noticeable at a decent cruise. You will have ZERO problems with it drowning out any possible noise in the cab.

Hope that helps.
 

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If you reallllly listen for it, you can hear it on the interstate, but it's honestly hardly noticeable, which is exactly what I was going for. It's got a nice deep rumble on start up and revving at low speeds, and combined with the CAI it sounds great when you floor it, but for the most part it's really just a deeper version of stock and hardly noticeable at a decent cruise. You will have ZERO problems with it drowning out any possible noise in the cab.

Hope that helps.
Great! That is what I wanted to hear. I think this is what I will be getting for mine next week then. :smiley_thumbs_up:
 

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Discussion Starter · #18 ·
Good luck brother! Let us know how it goes!
 

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Curious why you think it wont pass? You'll be running both a converter and muffler so you should be fine. If you were running no muffler then it might not pass.
They will actually get out a meter if they think it is too high a decibal level. This is Maine.
 
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