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Exhaust 5.7 HEMI Exhaust Discussion


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  #1  
Old 04-29-2014, 10:31 AM
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dvc357 dvc357 is offline
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Default Custom Exhaust Sungle Vs True duals

Ok,
So im old school. I have my new 2014 Ram Express ST Quad with a 5.7.
Should i NOT go to a true DUAL exhaust? some have reported the the Two to One actually performs better?!!?
Ive never heard of this before.
Input?

Last edited by dvc357; 04-29-2014 at 10:54 AM.
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  #2  
Old 04-29-2014, 11:30 AM
Scrum Scrum is offline
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I have no answer but that is a question I have asked myself before..How hard would it be to make it a true dual exhaust and what would be needed to do it.
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  #3  
Old 05-01-2014, 12:56 PM
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Don't know if it is true or not, but have been told on true duels you loose some low end torque, but gain it on the higher RPMs, something about less back pressure on the low end.
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Old 05-06-2014, 12:09 AM
JRob JRob is offline
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There are so many options to choose for duel exhaust, it's a matter of what you want to pay. Your factory exhaust funnels into one converter, then back out to two mufflers. The most affordable swap, and the easiest is to change out parts after the converter...remember the stock exhaust was meant to pass emission tests, not necessarily for mpg or hp. Flow Master and companies like Magna Flow offer good systems that are less restrictive than your stock unit, thus increasing hp and giving you a more aggressive sound. All newer vehicles are required to have a converter, so if you want more performance you can go with true duel exhaust, starting at the exhaust manifold. For the most performance you want to go with headers, two separate converters, an x-pipe to even the pressure out, and then two mufflers. Replacing all those parts gets expensive, parts alone in the $1000's and then include labor.. That's why you see the converter back systems, more affordable and still good hp gains.
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Old 05-06-2014, 01:12 AM
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I have true dual flowmasters with an X pipe right now and I have got to say I love the soundI could feel a good bit of an increase in higher RPM's a little bit of increase in low end torque I did have a single and do out before the true duals and also liked it but what really comes down to is how much you want to pay anythings better than stock I would have to say like thati like the true duals better. I only paid a total of 750 for tailpipes mufflers x pipe and labor
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Old 05-08-2014, 06:48 PM
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An X pipe only reduces noise and flow. My system will be a true dual, no X pipe or H pipe. You do NOT need an X or H pipe. just run straight back for best performance and sound. I will find out next week and confirm.
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Old 05-08-2014, 10:59 PM
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There's a lot of misguided information on the internet (and from many people). Back pressure is always bad. Technically a true dual exhaust (sized appropriately) with a crossover(x or h pipe) will perform the best. BUT, a dual to single (y pip setup) sized appropriately performs almost just as good, is significantly cheaper, easier to install, and lighter. I'm of the opinion that the 1 or 2 hp you MIGHT gain on the perfect dual setup is offset by the extra 5-10lb of the duals.

Crossovers are crucial to the good performance. It helps with scavenging.

Scavenging and velocity(sizing of pipe diameter) are what's most important overall. The best bang/buck is definitely a dual to single setup. For most of these 3rd/4th gen v8 rams optimum is dual 2.5" pipes to a 3" single.

Hope this helps.
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  #8  
Old 05-09-2014, 12:25 AM
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Quote:
Originally Posted by gixxer160 View Post
An X pipe only reduces noise and flow. My system will be a true dual, no X pipe or H pipe. You do NOT need an X or H pipe. just run straight back for best performance and sound. I will find out next week and confirm.
100% Wrong!

Quote:
Originally Posted by snrusnak View Post
There's a lot of misguided information on the internet (and from many people). Back pressure is always bad. Technically a true dual exhaust (sized appropriately) with a crossover(x or h pipe) will perform the best. BUT, a dual to single (y pip setup) sized appropriately performs almost just as good, is significantly cheaper, easier to install, and lighter. I'm of the opinion that the 1 or 2 hp you MIGHT gain on the perfect dual setup is offset by the extra 5-10lb of the duals.

Crossovers are crucial to the good performance. It helps with scavenging.

Scavenging and velocity(sizing of pipe diameter) are what's most important overall. The best bang/buck is definitely a dual to single setup. For most of these 3rd/4th gen v8 rams optimum is dual 2.5" pipes to a 3" single.

Hope this helps.
100% Correct!
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  #9  
Old 05-18-2014, 11:07 PM
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I also agree, an X or H is needed for scavenging and balancing exhaust pulses.. us guys that do alot of track time can't ALL be wrong about this..
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  #10  
Old 05-28-2014, 08:39 PM
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Yesterday I had my exhaust changed to a true dual system using a pair of AT2525 Aero Turbine mufflers. No X pipe or H pipe. The sound is amazing and the performance is great too. Smooth power all the way through. So far no problems. Very Happy. I will get pics up soon.
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