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Exhaust 5.7 HEMI Exhaust Discussion


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  #1  
Old 04-17-2013, 03:25 PM
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Question "What Size Will I Need?" im goin with Mag's!

I Desided to go with a singal in / dual out 14" Mag and a Y-pipe

What size will I need on the Muffler n Y-Pipe to keep the factory pipe sizes?
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Old 04-17-2013, 03:56 PM
S.C. Express S.C. Express is offline
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3 inch inlet. Dual 2 1/4" outlets on the muffler. Most of us just use the 2 1/2" outlet mufflers. A Simple reducer will solve the issue and you can go up on exhaust pipe size later if you choose. When I brought my muffler and truck to the exhaust shop I told him that I bought a larger outlet size, he did not even think twice about it. I think it actually helped him by giving him more room to work with.
The Y-pipe is 3" dual inlet and a single 3" outlet.
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Old 04-17-2013, 04:03 PM
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Originally Posted by S.C. Express View Post
3 inch inlet. Dual 2 1/4" outlets on the muffler. Most of us just use the 2 1/2" outlet mufflers. A Simple reducer will solve the issue and you can go up on exhaust pipe size later if you choose. When I brought my muffler and truck to the exhaust shop I told him that I bought a larger outlet size, he did not even think twice about it. I think it actually helped him by giving him more room to work with.
The Y-pipe is 3" dual inlet and a single 3" outlet.
Is that a definite? I put in my order last night with J from DAP and told him I wanted to do the exact same thing with my 2012 Hemi and he had me get a 3" inlet, 2.5" outlet Y pipe. Now I'm nervous
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Old 04-17-2013, 05:06 PM
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Originally Posted by Frankf300 View Post
Is that a definite? I put in my order last night with J from DAP and told him I wanted to do the exact same thing with my 2012 Hemi and he had me get a 3" inlet, 2.5" outlet Y pipe. Now I'm nervous
No you got the right one... I checked a few other places and found out the Y-pipe is a - 3in/2.25out
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Old 04-17-2013, 05:25 PM
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Originally Posted by The Heart Stoper View Post
No you got the right one... I checked a few other places and found out the Y-pipe is a - 3in/2.25out
Pheww!! Thanks, I didn't think he would've steered me wrong, but I was like crap, I don't want this to be butchered with a ton of adapters and big reducers or anything.
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Old 04-17-2013, 05:46 PM
S.C. Express S.C. Express is offline
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The Y-pipe has a 3" outlet right? The pipe from the Y to the muffler is 3"... Both pipes coming from the cats to the Y joint is 2 1/4" for real ? I was sure it was 3" inlets on the Y..
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Old 04-17-2013, 05:52 PM
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Originally Posted by S.C. Express View Post
The Y-pipe has a 3" outlet right? The pipe from the Y to the muffler is 3"... Both pipes coming from the cats to the Y joint is 2 1/4" for real ? I was sure it was 3" inlets on the Y..
I crawled under the truck to check myself also. The Y-pipe to the muffler is 3". The way they squashed the pipes together going into the stock Y, it looks like a 3". But the individual pipes themselves are 2.25" apparently. I didn't measure them, but they are most definitely not as big as the 3". So now the Y pipe will be dual inlet to allow those pipes to be connected individually and opened up so the truck can fart better than that time I had too much Taco Bell..........JK, JK
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Old 04-17-2013, 07:55 PM
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Okay so to be Exact heres what I found out..

Y-Pipe 2: 2.5" - 1: 3"

Muffler 3" in - 2.25" Out
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Old 04-18-2013, 11:04 AM
S.C. Express S.C. Express is offline
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Cool, thanks for sharing. I'm thinking about ditching the whole exhaust of my truck and doing a Cheffred style system. 2 1/2 pipes from the cats or where ever the pipes reduce down. No y-pipe, going H-pipe and turning my muffler around and finally a 3' dump over the axle. I'm kinda aqfraid of how loud it will be, but i could get this done fairly cheap and shave some weight.
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  #10  
Old 04-20-2013, 08:26 AM
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Quote:
Originally Posted by S.C. Express View Post
Cool, thanks for sharing. I'm thinking about ditching the whole exhaust of my truck and doing a Cheffred style system. 2 1/2 pipes from the cats or where ever the pipes reduce down. No y-pipe, going H-pipe and turning my muffler around and finally a 3' dump over the axle. I'm kinda aqfraid of how loud it will be, but i could get this done fairly cheap and shave some weight.
No way to know how loud it will be unless you try haha
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