True dual exhuast

[blank260]

I got a stock 06' sierra 4.8L that I'd like to add exhuast to and maybe some new headers. Wanting to get something real loud and low and was thinking of getting a 40 series flowmaster true dual set-up. My brothers got the 40 series and has it dumped before the rear tires and its decently loud.

 

Will the true dual set-up be any louder than what my brother has and should I consider any other kind of exhuast. Also, what are some good header/exhuast combos that sound really nice?

[lerbud]

Go with true duals. I have had them on 4 different trucks with no problems and I drive like a maniac. Some people dont think there is enough back pressure but I have not had one problem with any of my trucks. I have mine turned out behind the rear wheels and it is plenty loud.

[ZZebes]

Dynatech Supermaxx Headers, and a true dual with an X or H pipe

[blank260]

Dynatech Supermaxx Headers, and a true dual with an X or H pipe

 

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alright, i'll get the 40 series flowmaster installed asap and i'll check out those headers. got any other info on those headers?

[blank260]

is the corsa catback any louder than a 40 series flowmaster? Any gains on the 2 catbacks?

[theplayer]

If you get true duals get an X pipe in the system. If not you will lose low end torque. You have to have a lot of HP (600+) before you can go without the X pipe. I had a vet with 350 HP and it had factory true duals with an X pipe if that tells you anything.

[blank260]

thanks for the info. Also wondering wether this set-up will get me better gas mileage?

[Mark_in_Tulsa]

thanks for the info. Also wondering wether this set-up will get me better gas mileage?

 

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They may make more MPG in the 4500rpm plus range, since thats where you will get your power gains from. Which is where you will never be driving.

 

But with a single, you may receive more MPG in the lower RPM's, and you will definitly get more power in the lower RPM range, where you drive 99.9% of the time.

 

Plus with a 5000lbs.+, brick shaped truck, you want all the low end grunt you can. IMO.

[dewfpo]

thanks for the info. Also wondering wether this set-up will get me better gas mileage?

 

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Highly unlikely. In fact, maybe just the opposite. You'll have your foot into it more just for fun, and with a little less torque down low, you may need a little more throttle to get going. But it shouldn't be too bad.

 

DEWFPO

[DJFriar]

What's the price average on a true dual vs. "fake" dual? I don't want something real loud, just a nice "Throaty V8" sound at idle, and a decent rumble at throttle. Like a well tuned Mustang I guess. Not something that you hear from 6 blocks away, but when you are at a stoplight, the guy next to you would notice its different than every other GMC. What would you guys reccommend then?

[ZZebes]

Magnaflow

[theplayer]

DJFriar

 

I got a hooker Aerochamber and really like it. I would say it is in between the flowmaster and magnaflow on loudness. I don't get any cab noise on the highway at all, but you can hear it when you get on it. I have an aerochamber 3" inlet dual 2.25" outlet that I am trying to sell. It is brand new in the box with nothing wrong with it. Same muffler I have on my truck now.

[elbud72]

I have a dumb question. I currently have true duals with Flowmaster 40's and no X pipe. The Flowmasters are too loud for my taste so I was thinking about going to a single Magnaflow with a side exit.

 

Can you do an X pipe and then go to single muffler w/ 2 inlets and one exit or is does the single muffler act as an X pipe?

 

My '03 1500 HD gets 11 MPG and is a complete DOG off the line. TIA.