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True Dual Exhaust?

fishhook5969

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fishhook5969 Enthusiast

fishhook5969

Posted
Posted

I want to put an exhaust system on my truck with split dual tips in the rear, but I would also like it to be true dual with a crossover. Is there anyone that makes a kit with a crossover for the 09 Silvy? (I also have a CrewCab, 4WD, 5.3 Flex) I have scoured over most of the exhaust mfg. sites and didn't find anything that wasn't single in/ dual out. I also tried searching this forum and didn't find any specific answers. I apologize if this has already been discussed ad nauseum and I missed it. Thanks for the help!

Jubei69 Enthusiast

Jubei69

Posted
Posted

You can do what hockeypro did on his setup, then you can decide if you need a x pipe or h pipe to "balance out/equalize" the cyclinder banks according to Magnaflow and Flowmaster. The kits I listed were actually for Corvettes and GTO's, I assumed they would have the same kits for GMC/Chevy trucks; but there isn't :thumbs:

nickvrebel Senior Enthusiast

nickvrebel

Posted
Posted

there is no such kit. The reason you could see if you would look under your truck. Your exhaust flows from the motor to manifolds -> Catalytic converters to a "Y" junction (hence the name "Y pipe") then there is a flange - this flange separates the Y pipe from the "cat back" portion of the exhaust. The Y pipe is one welded piece and would have to be hacked up to eliminate the Y junction.

 

now to my question for you: why would you want a "true dual" exhaust??? if you are using a single in dual out muffler then the factory has essentially already included the "built in" X pipe.

hockeypro1411 Senior Enthusiast

hockeypro1411

Posted
Posted

Take it to an exhaust shop and see what they can do for you. They typically know what works the best from their experience. Pick out a muffler that you think sounds nice, and go from there.

 

I don't have an X or an H or any crossover for that matter. Mine both run directly from the manifold to the mufflers, and then out to the back.

nickvrebel Senior Enthusiast

nickvrebel

Posted
Posted
Take it to an exhaust shop and see what they can do for you. They typically know what works the best from their experience. Pick out a muffler that you think sounds nice, and go from there.

 

I don't have an X or an H or any crossover for that matter. Mine both run directly from the manifold to the mufflers, and then out to the back.

your truck appears to also be an HD, I don't see any Duramax badgng so is it safe to assume you have the 6.0L?

if so your truck came from the factory with a "Y" pipe that does not connect and it had a dual inlet/ single outlet muffler in stock form, much easier to do this if desired.

 

I still don't see any benefit of going through the trouble to split the exhaust only to bring it back together again using a H or X pipe. The only thing you'll accomplish is adding more weight and having to buy another muffler.

Jubei69 Enthusiast

Jubei69

Posted
Posted
I still don't see any benefit of going through the trouble to split the exhaust only to bring it back together again using a H or X pipe. The only thing you'll accomplish is adding more weight and having to buy another muffler.

 

 

+1

 

lol :lol: so you believe the H pipe and X pipes are gimmicks from the exhaust manufacturers to get a little extra coin from the masses... :thumbs:

hockeypro1411 Senior Enthusiast

hockeypro1411

Posted
Posted
Take it to an exhaust shop and see what they can do for you. They typically know what works the best from their experience. Pick out a muffler that you think sounds nice, and go from there.

 

I don't have an X or an H or any crossover for that matter. Mine both run directly from the manifold to the mufflers, and then out to the back.

your truck appears to also be an HD, I don't see any Duramax badgng so is it safe to assume you have the 6.0L? YES.

if so your truck came from the factory with a "Y" pipe that does not connect and it had a dual inlet/ single outlet muffler in stock form, much easier to do this if desired. DO WHAT?

I still don't see any benefit of going through the trouble to split the exhaust only to bring it back together again using a H or X pipe. IT'S BEEN SAID THAT IT CAN HELP BALANCE THE EXHAUST PRESSURES. The only thing you'll accomplish is adding more weight and having to buy another muffler. WHO NEEDS MUFFLERS?

 

kdog55 Enthusiast

kdog55

Posted
Posted

My 05 6.0L came with true duals through 2 cats and into 1 muffler, dual inlet/dual outlet, then came together into 1 tailpipe right after the muffler. I have no idea why, but I trust their engineers. Anyway, before I put on my MBRP true duals, I did a bunch of reading on things like the x-pipe, H-pipe, and different length tips, all of which change the sound and the crossover pipes did have a purpose. I cannot find the thread anymore, but it is not as simple as just extra weight/cost. FWIW, I am still having a tough time getting used to hearing the dual exhaust. Not because it is louder(it replaced a flowmaster big block series single muffler-dual in/dual out to stock y-tailpipe), but since I am used to hearing everything come out of 1 pipe, the duals sound to me almost like a miss in the engine, I guess because the drivers side bank is all I really hear. I wonder if an x-pipe would help this also?

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