2014+ Exhaust Systems & Mufflers

SouthernSilveradoGuy85 · November 27, 2014

Thank for the info^^ I'm going to have to look for some vids.

Sounds like your set up may be for me.

With just my Borla muffler, I only hear it really good on cold startups and when I punch it. Would love to be able to hear it just a tad more on driving in and idling.

Well to give you more of an idea, I park on the street in front of my house and when I remote start it from my bedroom (back end of house) I hear it just fine. Same as when I've done it from my backyard. So I know when it starts up without having to look at the truck lol. So I know as long as the remote is in range it's loud enough for me to be able to hear. It's not a "I can barely hear it" type of thing either. But, it's also not so loud that you can't hear anything else while driving. Even with the windows down I can get by with the radio only being about 1/3 and 1/2 volume. To me it's perfect and have no complaints.

Here's a vid I made of it. The only thing it doesn't show is the V4 drone which you'll hear in an aggressive exhaust that doesn't have the flapper valve.

https://www.youtube.com/watch?v=mQxoOtyr1qs

Edited November 27, 2014 by SouthernSilveradoGuy85

lemmuhj · November 27, 2014

Great video^ Was that a cold start?

SouthernSilveradoGuy85 · November 27, 2014

Great video^ Was that a cold start?

No, I had driven for about 15 minutes and the temp was in the 70s I believe. A cold start up it's a tad louder because of the RPMs obviously, but as you know it doesn't take long for the RPMs to drop.

lemmuhj · November 27, 2014

I've listened/watched your video about a dozen times now. I think it sounds perfect!

lemmuhj · November 27, 2014

Also want to add that i purchased the Intune by Diablo. It has pre programmed tunes on the handheld device. I was amazed at how it woke my truck up!

My point bringing up the Intune is that you can turn off the V4 mode...keeping the truck firing on all 8cyl..all the time...no drone!

Im sure most of you know this, but wanted to mention it as an extra mod along with the Airaid and Borla muffler...its a must buy

Edited November 27, 2014 by lemmuhj

No Tyme · November 27, 2014

Also want to add that i purchased the Intune by Diablo. It has pre programmed tunes on the handheld device. I was amazed at how it woke my truck up!

My point bringing up the Intune is that you can turn off the V4 mode...keeping the truck firing on all 8cyl..all the time...no drone!

If I understand correctly the newer computers do like a time stamp when you alter the ECM. I chose to purchase a "Range" device that leaves no footprint in the ECM. Just another option if your worried about warrant issues down the road.

Mike1220 · November 27, 2014

If I understand correctly the newer computers do like a time stamp when you alter the ECM. I chose to purchase a "Range" device that leaves no footprint in the ECM. Just another option if your worried about warrant issues down the road.

When the stock tune is reloaded with the Intune onto the ECM, the only way that GM can tell that the computer was accessed is if they are looking for it. Reloading stock tune leaves no real footprint other than one saying that the computer was accessed. Same thing that appears when a dealer checks the computers. So it doesn't look out the ordinary

This is what I have been told by a worker at a dealer who had a tuner on his 14'

No Tyme · November 27, 2014

When the stock tune is reloaded with the Intune onto the ECM, the only way that GM can tell that the computer was accessed is if they are looking for it. Reloading stock tune leaves no real footprint other than one saying that the computer was accessed. Same thing that appears when a dealer checks the computers. So it doesn't look out the ordinary

This is what I have been told by a worker at a dealer who had a tuner on his 14'

This is good for many to know. I myself won't go the route of a tune as I did this before and seen no real gain in fuel or performance. The one thing I did see was tighter shift points but I am not one to bump up the shift pressure more than 30%... I did a trans build with servos and shift kit etc in my 05 Avalanche and it was by far more rewarding and costly.

Edited November 27, 2014 by No Tyme

redwngr · November 28, 2014

When the stock tune is reloaded with the Intune onto the ECM, the only way that GM can tell that the computer was accessed is if they are looking for it. Reloading stock tune leaves no real footprint other than one saying that the computer was accessed. Same thing that appears when a dealer checks the computers. So it doesn't look out the ordinary

This is what I have been told by a worker at a dealer who had a tuner on his 14'

In the duramax world, GM requires and ECM 'snapshot' before approving major engine warranty work.

I think that counts as 'looking for it'

Edited November 28, 2014 by redwngr

Luster · November 28, 2014

There have been a lot of "In cab" videos posted, but to my ears, none have captured what the real sound is in the cab. I have never heard a video that even remotely depicts the V4, helicopter sound. I think you have to actually ride in the truck to truly "hear/feel" the V4 thing. To me it's a "feeling", as much as a sound. You know how you sort of "feel" the bass in a good stereo....pretty much the same idea. Maybe if you have a real good speaker system, or headphones, you might get closer, but just standard computer speakers.........I don't think so.

Its a sound hard to describe.........it drives some poeple crazy, and others don't seem to mind it. My 2007 Silverado had a Magnaflow system, and the V4 thing was certainly noticeable, but really it didn't bother me all that much, and I guess I just got used to it over time. Like I said, you need to hear it in the cab of a truck, In my opinion, for what it's worth, I don't think the V4 sound can be reproduced in a sound clip with any accuracy.........you have to hear it for yourself.

Well stated. I agree 100%. As I've stated before, I like the sound of both V8 and V4 modes with the 14" Magnaflow.

A friend of mine (who happens to like a ride a quiet as a Rolls) said... "That is unbearable! You ruined it!"

I just smiled and said... "Love it."

Beauty is in the ear of the beholder!

Mike1220 · November 28, 2014

Hey guys, I got a video of the 18" magnaflow. I don't like the video at all. Makes the "drone" sound like an unbearable noise. I'm currently in the process of trying to get it to sound more realistic to give y'all a proper video! Hopefully I can get a good video that properly depicts the sound soon.

revitupfaster · November 30, 2014

With just my Borla muffler, I only hear it really good on cold startups and when I punch it. Would love to be able to hear it just a tad more on driving in and idling.

Be careful what you wish for...........these new 2014 trucks are exceptionally quiet inside, and this really affects the inside sound of a performance exhaust. I have the GM Borla system on my truck, and one day had my son drive it while I was outside. I had him do all the usual moves like take off from a stop, drive by at 40/50mph and then hit it etc.

I was very surprised as the sound was much louder outside than I would have expected. The inside sound to me was very reserved, and I also had some reservations that it may have been too quiet. Not the case........much more sound when listening from the outside.

I would think if you get the sound up to the level where you can hear it inside at a normal cruising speed, the sound would have to be extremely loud outside. I would get someone else to drive your truck and you listen from the outside before making any major changes........you just might be surprised.

Just my thought.

Edited November 30, 2014 by revitupfaster

lemmuhj · December 1, 2014

Be careful what you wish for...........these new 2014 trucks are exceptionally quiet inside, and this really affects the inside sound of a performance exhaust. I have the GM Borla system on my truck, and one day had my son drive it while I was outside. I had him do all the usual moves like take off from a stop, drive by at 40/50mph and then hit it etc.

I was very surprised as the sound was much louder outside than I would have expected. The inside sound to me was very reserved, and I also had some reservations that it may have been too quiet. Not the case........much more sound when listening from the outside.

I would think if you get the sound up to the level where you can hear it inside at a normal cruising speed, the sound would have to be extremely loud outside. I would get someone else to drive your truck and you listen from the outside before making any major changes........you just might be surprised.

Just my thought.

Wow...extremely good advice, thank you.

Im actually considering getting a Borla S Type cat back. From all the vids ive seen, it may be just right.

Looks like ill be getting my wife to do some drive bys first:)