2015 GMC SIERRA STRAIGHT PIPE (3rd cat delete, muffler and 3rd resonator delete) 

Now that's how a video should be made and put up. Showing exactly what was done and what it'd gonna be like in all situations ( start ups, take offs etc). Thanks for doing it right

This setup with true duals is absolutely insane

Just did it with my 2014 5.3 but I kept the muffler, I got a 93 tune on it with bigger injectors and a cold air intake, I got the flowmaster outlaw muffler, and I do say so my self it sounds absolutely insane!! Not to mention performance increase it’s a runner for sure not many trucks out there unless they’re turbo Charged can keep up lol

Honestly this truck sounds badass. I just got myself 2015 GMC Sierra and I'm try to do this build on it.

Almost got the same setup on mine I did a side dual exhaust. And mine has a little more aggressive tone since there’s no tailpipe going all the way to the back of the truck. But yours sounds really good

sounds good👍🏻 ill be doing this set up on my 2014 silverado

Did you get any check engine light by deleting the 3rd cat?! I'm planning on deleting my 3rd cat also.

Sounds badass man, I need delete my 3rd cat as well

I have a 2010 GMC Sierra with the 3rd cat out my questions is would a muffle delete do anything for me or would I need to get it straight piped ( I’m trying to be able to beat the box if you know what that’s )

God Bless America❗️🇺🇸

I have a 5.3 w a three inch pipe going all the way to the third cat and I was looking to make my truck louder but wondering how much removing that cat would kill the tone

Did you remove all your catalytic converters and muffler and had no interference with the O2 sensors? I’m wanting to do that with my 2018 Sierra 5.3

Did you remove all Cats on the exhaust ? there's 3 of them .

How was your gas mileage effected? And did your check engine light come on?

How long is the pipe from 3rd cat to the muffler and is it a 3inch pipe?

I Know For A Fact His Truck Gained At Least A Minimum Of 5 HP After Removing That Catalytic Converter... 👍🏽

Does the truck pass the inspection with the third cat deleted?

I had a flow master 44 and high flowcats put on and now I got a cel, if I remove 3rd cat will that turn off cel

Aye bro I got a question has your truck acted weird ever since you got your cat delete?

I want my 2017 Sierra slt just like that ! 😅

Did you delete all 3 resonators? There's 2 up front AFTER the oxygen sensors. And the 3rd one under the passenger side floor

Suena machin,la mía nomás muffle n resonator delete

That sounds great👍.

I’ve seen where people have cut there 3rd cat off and have had no problems. And some people who have. I’m indifferent on doing it. But I really want to. I just don’t want a check engine light coming on or my gas mileage going down

Does dumping the tip like that make it louder?

Does it throw a check engine light up? And does it still pass inspection

Is it real loud in the cab . ?

I have a 5.3 2015 Silverado will deleting my 3rd cat pop any check engine lights or anything?

How is the cab noise is it noisy in the cab or not to bad?

That sounds amazing

I havent cut my third cat off yet, do u get drone in the cab when your cruising on a highway?

would it sound the same with a 3 inch dual tip??

Would it pass inspection?

When I did this my truck through a check engine light code (P1400) and will start but not remain running. Has anyone else had this problem?

I did the same this compa and it’s nice as first I am starting to hate it way to loud

What size is the pipe before the 3rd cat?

Does it set any codes off ? Deleting the third cat? Or loss of power?

What size pipe did you use ?

Did this throw a check engine light??

Will it sound the same if 3rd cat was gutted?

My truck screeches when I start it too. Any idea what it is.

Did you notice mpg get worse by deleting the 3rd cat?

That's craaaaazy

I was told removing the 3rd cat it wouldnt pull a step hill

5.3????

awsome👌👍

That sounds terrible. How can you handle that raspy takeoff and drone.

I have the 6.2 2015 silvy anyone know how that'll sound 🤔

You think this is too loud ? 🧐

How much did all this cost

No check engine from 3rd cat delete an what kind of fuel you run?

This a V8 or v6

Is this the 5.3 or 6.2

sounds good

Uh, why?

Not straight piped if you still have cats on btw

Is this a v6 or a v8

No flex pipe either huh

I much louder you think taking off 3rd cat is from just muffler and resonator delete. I have muffler and resonator delete but thinking bout taking off 3rd cat.

Ima do this on my 2008 Tahoe 😐

Truck has 1 muffler, 2 cats and 1 resonator . Smh

Is this Abilene lol....

Decibel tickets and failing smog tests is all I hear.

Ew way to clappy

Not true duals

That’s definitely not a diesel it sounds like shit.