exhaust ?

kbr577 · Mar 25, 2012

I heard that people were losing low end with a full 3" cat back,is that on the trucks with dual exhaust only?,not the single

quietpeen · Mar 26, 2012

welcome to rf.

i guess if you go from a 2.5 to a 3" on the outlet of the muffler you could lose some back pressure. Not sure how it would effect the dual system since that is a 3" in dual 2.5" out

Picton · Apr 4, 2012

I opened up both sides of the engine by removing the nasty Y-pipe and running dedicated pipe from each side to a dual IN/OUT Borla muffler. However, I stuck with 2.5" pipe as I felt two seperate pipes at 3" might take away from the low end and seeing as how they ran it down to one 3" pipe originally, 2 pipes at 2.5" should be more than enough of an improvement.

390hemi · Apr 7, 2012

I have the factory duals and I went to a muffler shop today to install a 14"magnaflow muffler and magnaflow ypipe
and the guy suggested somethin else. He said changing out the muffler is fine but not to waste my time with the new y pipe, he said if I wanted to do that might as well cut the pipe and make true duals, I would think I would lose backpressure and low end power which I dont want. He was all about a free flowing exhaust he wants to remove my resonators also, which Im not going to do, I want to keep incab drone to a minimum. I would say 100% free flowing exhaust for the track or drag racing is fine but everyday normal driving I would want some backpressure and not lose power, or some cutouts so u can u can have best of both worlds.

CrazyBen · Apr 9, 2012

I would say go with a y-pipe or an X-pipe. Do not go "true duals". You need that cross flow from the x/y-pipe to help draw the air out of the cylinders. It sounds to me like your exhaust guy just wants to sell you stuff. If you bought a good mandrel bent 2.5" y-pipe and magnaflow muffler tell him that's what you want put on your truck.

Can you post pictures of what you are wanting him to install?

Ben

CrazyBen · Apr 9, 2012

Of course depending on how crazy you plan to go with the truck I would also suggest just doing the muffler now. Then getting the ARH Longtubes with the appropriate y-pipe.

390hemi · Apr 11, 2012

CrazyBen said:
I would say go with a y-pipe or an X-pipe. Do not go "true duals". You need that cross flow from the x/y-pipe to help draw the air out of the cylinders. It sounds to me like your exhaust guy just wants to sell you stuff. If you bought a good mandrel bent 2.5" y-pipe and magnaflow muffler tell him that's what you want put on your truck.

Can you post pictures of what you are wanting him to install?

Ben

Thanks for the tips what I want him to install is magnaflow part numbers 13278 for the muffler and part number 10778 for the y pipe

390hemi · Apr 11, 2012

CrazyBen said:
Of course depending on how crazy you plan to go with the truck I would also suggest just doing the muffler now. Then getting the ARH Longtubes with the appropriate y-pipe.

Headers would be down the road sometime, the old lady would kill me if I add more to my mod list lol

CrazyBen · Apr 11, 2012

I would just do the muffler now and get a y-pipe with the headers.

Anything else I think you're wasting money.

kbr577 · Apr 12, 2012

I put a dynomax system on it,sounds and looks great.It's 3" in,3" out.

talon6 · Apr 12, 2012

here is a pretty good spec from magnaflow. i would say they are pretty right on.

Magnaflow Technology

exhaust ?

kbr577

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quietpeen

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Picton

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390hemi

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CrazyBen

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CrazyBen

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390hemi

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kbr577

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