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Loudest exhaust

fdsjr

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fdsjr New Member

fdsjr

Posted
Posted

I have a 1996 GMC Sierra Z71 4x4 V8 5.7 liter. Which of the following exhausts would be the loudest? Borla Cat Back, Edelbrock Cat Back, or Magnaflow exhaust system?

Cool Zr2 Enthusiast

Cool Zr2

Posted
Posted

Do exactly this.

 

2 inch pipe from the cats, thrush glasspacks, 2 inch pipe to tips, tips of your choice.

 

Not much sounds this loud AND badass at the same time. And when these glass packs are at idle, they chirp, sounds neat and everyone likes mine when they hear it.

 

I got a video of it somewhere around here.

fdsjr New Member

fdsjr

Posted
  • Author
Posted
Go with 2 1/4 inch pipe for less snap.

 

 

 

 

 

 

Are there any good, cheap online stores that sells this setup? Which brands would you recommend?

 

 

 

 

 

Im interested in that video... keep looking buddy and post it

fastdrvr23 Enthusiast

fastdrvr23

Posted
Posted

www.bigexhaust.com is a good place online, I bought my magnaflow from them.

 

The loudest? How about a Flowmaster 40 series, those are pretty loud...

I would imagine that the Edelbrock would be the loudest of the ones you listed.

 

Do like Cool Zr2 said, that would sure enough be loud!

Shawn T Enthusiast

Shawn T

Posted
Posted

Be careful how much you open that exhaust up. I had a buddy put straight pipes and glass packs on that exact truck. He lost all of his back pressure. It turned into a dog because he lost some torque on the low end and it resonated badly at highway speeds.

Cool Zr2 Enthusiast

Cool Zr2

Posted
Posted
Be careful how much you open that exhaust up.  I had a buddy put straight pipes and glass packs on that exact truck.  He lost all of his back pressure.....

 

 

 

 

You won't loose any backpressure if you keep your cats.

 

"Right click and Save Target as"

 

Winter Video

 

Spring Video

 

They are QUICKTIME videos, so make sure you go get that player if you don't have it.

Shawn T Enthusiast

Shawn T

Posted
Posted
Be careful how much you open that exhaust up.  I had a buddy put straight pipes and glass packs on that exact truck.  He lost all of his back pressure.....

 

 

 

 

You won't loose any backpressure if you keep your cats.

 

"Right click and Save Target as"

 

Winter Video

 

Spring Video

 

They are QUICKTIME videos, so make sure you go get that player if you don't have it.

 

 

 

 

 

 

Good point, he removed his. That was a good burnout in the "Spring Video". I see you put some different rims and tires on, as not to burn your AT's up. What is in it, a 5.7L?

JML79 Enthusiast

JML79

Posted
Posted

So, as long as you keep the cats, no back pressure is lost with NO muffler at all? My brother's '05 Z-71 (5.3L) has the cats, but he had a y-pipe fabricated that starts after the convertor with 2.5in piping out the back into big 18in chrome tips. Needless to say, it sounds bada$$!!! He didn't feel like he'd lost any torque, but I thought removing the muffler would cause a loss in back pressure-is the muffler's only real function to reduce noise and harmful exhaust fumes?

WhiteyZ71 Enthusiast

WhiteyZ71

Posted
Posted

you muffler has nothing to do with fumes, pollution, etc...just there for the noise, you cats take care of the pollution and such

JML79 Enthusiast

JML79

Posted
Posted

Ok, so the muffler takes care of the noise. What takes care of the back pressure-the cats or the muffler.....or both??

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