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Custom Borla Exhaust Install

StayInYourLayne

By StayInYourLayne
in Engines & Drivetrain

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StayInYourLayne Enthusiast

StayInYourLayne

Posted
Posted

So I have been trying to decide on what route I want to go for my exhaust system for my 2014 Silverado 5.3. I was considering the GMPP Borla Exhaust, but I heard that the total volume of the sound does not really increase, just the tone does. I'm not willing to spend $1,200+ for the same volume, so I have been looking at having a shop do a custom install. I have a few questions about that though. I was planning on getting a Borla Atak or S-type muffler with single in/dual out and having a dual rear exit.

 

My questions are:

1. Because the exhaust flapper is located behind the muffler, my shop said they can attach it to one of the exit pipes, but obviously not both. Is it possible to buy a flapper or do some shops have these? Will one fix the drone for only that specific tail pipe or both? (I respect everyone's opinions, but I'm not willing to entertain any possibility of drone so I want the flappers in place.)

 

2. Does anyone know if Borla will sell me just that individual muffler they usually sell with the whole kit for the Silverados or do I need to get one of the general ones they sell?

 

3. Has anyone else done something similar and have any input on this situation?

 

Thanks

wuznme Enthusiast

wuznme

Posted
Posted

The Borla GM exhaust has the flapper in front of the muffler, so that is an option too.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

Move the flapper in front of the muffler. I believe on my 14 the flapper was before the muffler.

StayInYourLayne Enthusiast

StayInYourLayne

Posted
  • Author
Posted

The Borla GM exhaust has the flapper in front of the muffler, so that is an option too.

 

 

Move the flapper in front of the muffler. I believe on my 14 the flapper was before the muffler.

 

So having the flapper in front of the muffler will have the same effect as having it behind? If so, that is the exact solution I have been looking for

wuznme Enthusiast

wuznme

Posted
Posted

IMO... exhaust are a science and the manufacturers that make them have the knowledge as to what works.

 

Borla designed the GM Exhaust with a valve -- I have had this one and no crappy sound in V4 mode

Borla didn't design other exhaust with a valve

Corsa doesn't have a valve

Magnaflow doesn't have a valve -- I have had this one no crappy sound in V4 mode

Flowmaster doesn't have a valve

 

Can't speak to the others, also have had Walker and Dynomax with valve cutout, had crap sound in V4 with the Dynomax none with the Walker but that was a huge muffler.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

 

 

 

So having the flapper in front of the muffler will have the same effect as having it behind? If so, that is the exact solution I have been looking for

My 14 was in front, I did a muffler delete and later an after market muffler. Sorry to say I had the dreaded V4 sound with both. I went with a hand held and turn the V4 off. I did the whole loud exhaust thing on everything till I turned 60, even my costume truck has two sets of mufflers now. Never though it would happen.

 

 

Sent from my iPhone using Tapatalk

Valley Viking Enthusiast

Valley Viking

Posted
Posted

Get the GMPP Borla, order online at shopchevy.com and install yourself for about $950. This system was designed for your truck, no drone and sounds great. Built by a manufacturer that knows exhaust. You won't rattle windows in the house at the end of the block but anyone who tells you it is the same volume as stock has never ridden in a truck with this exhaust (and maybe a MIT to go with it). Just do it........quit thinking about it.

StayInYourLayne Enthusiast

StayInYourLayne

Posted
  • Author
Posted

Are you set on a 1 in 2 out muffler? You could run a single in/out muffler with the valve after, then add a Y after the valve.

 

I decided to save my money and I'm going to start shopping around for my next truck. Thanks for the input though!

pewterliftedz Enthusiast

pewterliftedz

Posted
Posted

 

I decided to save my money and I'm going to start shopping around for my next truck. Thanks for the input though!

Not a bad plan, why though? Going 4wd?

StayInYourLayne Enthusiast

StayInYourLayne

Posted
  • Author
Posted

Not a bad plan, why though? Going 4wd?

Yeah I would like a 4wd and a 6.2L as well. Also would like to get a black truck instead of white, only got the white because of the deal I got on the truck

AZRenegade Enthusiast

AZRenegade

Posted
Posted

IMG 20160703 065955706 HDR

I have the Borla sport and currently run AFM. Frankly, I don't know what all the fuss is about relative to the V4 sound. I do hear a change in the sound coming from the exhaust but V4 mode rarely lasts for more than a few seconds and although there is a change in tone I really don't consider it annoying. My opinion is to forget the "flapper" altogether.

pewterliftedz Enthusiast

pewterliftedz

Posted
Posted

 

I decided to save my money and I'm going to start shopping around for my next truck. Thanks for the input though!

Smart move man, the 6.2 is an absolute beast. I love it. Those Auto 4wd launches are a lot of fun, and surprises the hell out of people haha.

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