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Exhaust 5.7 HEMI Exhaust Discussion


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  #11  
Old 06-25-2014, 02:11 AM
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Originally Posted by JRob View Post
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.
+1 on headers, x pipe and dual muffles. Be sure you size everything correctly, if your pipes are to big you will lose exhaust flow velocity. And in turn lose some low end.
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  #12  
Old 06-25-2014, 08:36 AM
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It can definitely get expensive. It cost me probably about $400 to do SS mandrel bent exhaust from the manifolds to the stock tail pipe, with a 22" magnaflow that I got for free. And a friend and I did all the labor. But it will last forever, I used ball/socket joints and can remove my entire exhaust in about 10 minutes, and I reused all stock hanger locations. That's dual 2.5" in to single 3" out. And good luck finding a muffler shop that can do all of the above (SS, mandrel bent, TIG welded, ball/socket joints). Most have a MIG and MIGHT carry SS pipe and can MAYBE order in mandrel bent pipe. Can't imagine what they'd charge you either.

Ball/socket joints are amazing. Well worth the money. Those damn band clamps don't seal worth a damn.
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Old 06-25-2014, 09:08 AM
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Originally Posted by chefred112 View Post
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..
I couldn't agree more, it is crucial for max performance that you have some sort of a crossover.
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Originally Posted by snrusnak View Post
It can definitely get expensive. It cost me probably about $400 to do SS mandrel bent exhaust from the manifolds to the stock tail pipe, with a 22" magnaflow that I got for free. And a friend and I did all the labor. But it will last forever, I used ball/socket joints and can remove my entire exhaust in about 10 minutes, and I reused all stock hanger locations. That's dual 2.5" in to single 3" out. And good luck finding a muffler shop that can do all of the above (SS, mandrel bent, TIG welded, ball/socket joints). Most have a MIG and MIGHT carry SS pipe and can MAYBE order in mandrel bent pipe. Can't imagine what they'd charge you either.

Ball/socket joints are amazing. Well worth the money. Those damn band clamps don't seal worth a damn.
I agree here as well, I only did a y-pipe back full stainless, mandrel bent, and tig welded exhuast my room mate and i did everything and it still cost me $300. We also used v-band clamps instead of ball and sockets but same premise. Good exhuast gets pricey in a hurry.
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