2014+ Exhaust Systems & Mufflers

Trwtow · August 5, 2014

anyone that bought a catback system install it at home without a lift how big a job is it?

thinkin about the gm/borla system thanks terry

14SLTZ71 · August 6, 2014

anyone that bought a catback system install it at home without a lift how big a job is it?

thinkin about the gm/borla system thanks terry

Most CatBack systems don't require any welding and are pretty straight forward. Can be done at home no problem.

I have installed Borla and Corsa kits other than taking up some of your time, the work is fairly easy.

Edit: a lift would be nice but is not required on most 4x4 trucks. If you can slide under the truck and don't mind crawling around on the ground, it's gravy train.

Edit: you may not be able to get your factory exhaust out without cutting it somewhere, with a lift it's a bit tricky but you can get it out all in one piece. Most people cut it somewhere anyway just to get it out easier.

Make sure you have a large piece of cardboard or something to put the muffler and other components on, helps to get them under the truck easier.

Edited August 6, 2014 by 14LTZZ71

Daniel T · August 7, 2014

Borla GMPP dual out the back ordered and should be ready to pickup by tomorrow afternoon!

Decided to go with GM system. More comfortable with installing a part with a GM parts number on my brand new truck...after warranty expires I will consider changing the muffler/removing the AFM flapper and doing a tune.

ddmcs14 · August 8, 2014

Both..

That flare in the aFe pipe is where I cut it and added the different tip. The aFe tip in the kit is 3.5 in and 4.5 out... ok for a diesel, not a 5.3L IMO.

You have a pic of the new tip? I agree the provided one is wayyyy to big.

Trwtow · August 8, 2014

Borla GMPP dual out the back ordered and should be ready to pickup by tomorrow afternoon!

Decided to go with GM system. More comfortable with installing a part with a GM parts number on my brand new truck...after warranty expires I will consider changing the muffler/removing the AFM flapper and doing a tune.

mine will be here Tuesday I went gmpp dual side exit

expensive but ill be able to hear it run now

smpldezine · August 8, 2014

You have a pic of the new tip? I agree the provided one is wayyyy to big.

Daniel T · August 9, 2014

Exhaust is installed!

Daniel T · August 9, 2014

A quick pic for now

sugarjohnson · August 9, 2014

Exhaust is installed!

How's the sound? I want the GM Borla but tow quite a bit and don't want to aggressive/sound. I understand its the touring muffler not the sport correct?

Daniel T · August 9, 2014

Yes touring muffler...

Sound is quite subdued...

I am sure it will get a bit more aggressive as it runs in over a few weeks.

Still very quiet inside...nice bark under hard acceleration, but still not boy racer loud.

So far sounds just like the videos Borla has posted for the GM systems.

Took about 1.5 hours total for install, doing it solo...

Took most of the time getting the truck up high enough to get the stocker out in one piece.

Will be towing our 7,000#+ travel trailer up to south Lake Tahoe next week, so we will see how it goes.

Edited August 9, 2014 by Daniel T

sugarjohnson · August 9, 2014

Awesome thanks for the info. I had a Borla touring muffler on my 2011 and it was a little loud while towing but that was on a 5.3 with 3.42 gearing. My 6.2 has 3.73 and can stay in 5th longer. The 5.3 had to go down to 3rd at times and the noise got old while towing. Please report back after your trip I tow a 5500# TT as well.

sethorama · August 10, 2014

I ran dual pipes to a x pipe than to a di/do 40 series flowmaster.. Sounds better than any of those catback systems I've heard in person and on the internet. Absolutely zero drone. Loud when you want it to be and mild while idling. My dic is showing 1 mpg increase.. My truck feels more snappier. It was a noticeable difference. .

sethorama · August 10, 2014

Sorry if that pictures are crappy quality it was a rush to take them and it was also felt like 190 in there. I'll be home Tuesday night I'll take better pictures and maybe a video if someone wants it

ToesonTheNose · August 10, 2014

cant wait to hear sound clip. I want the Borla too

Tmatt1990 · August 10, 2014

Hello! I have a 2014 silverado ltz 5.3L and I want to know your opinions on the best exhaust to gain MPG. I don't want my truck to be super loud, I just want a nice low rumble, nothing obnoxious. Suggestions please?