2015 + Weld-in Exhaust Options

[SgtTackleberry]

Hi,

I just picked up a 2016 Tahoe LTZ 5.3L and was wondering what the stock piping is for a weld in? Is it 3.0 inlet/oulet or 3.5 now? Also, does the muffler have to be offset?

Reason I ask this is because I wanted to use the Borla XR-1 or Borla S-Type as opposed to the Borla Pro XS. I'm sure a good muffler shop can make it work but I don't want to take the chance and waste time and money. Let me know your thoughts on this. Thanks guys!

 

[drakon543]

Any place that considers themselves an exhaust shop should be able to handle this without any issue or answer your question better as to what thier capabilities are. If they cant do either i would suggest finding a different shop and warning anyone you know to not go to that shop.

 

[SgtTackleberry]

Any place that considers themselves an exhaust shop should be able to handle this without any issue or answer your question better as to what thier capabilities are. If they cant do either i would suggest finding a different shop and warning anyone you know to not go to that shop.

True, thank you. As for the factory piping size, is it still 3 or is it now 3.5?

 

[rattmobbins]

True, thank you. As for the factory piping size, is it still 3 or is it now 3.5?

Almost 100% sure the 5.3 is 3" pipe. The 6.2 has 3.5"

 

[NORCAL SS]

here is the muffler I set up my 5.3 customers with. NO issues and sounds great (same ones i use on the 6.0 tbss)
http://tbssowners.com/store/index.php?act=viewProd&productId=243

 

[tbordenet]

Hey Tony,
What about the 6.2 I already cut off the resonator. It sounded good on my 2008 just cutting off the little muffler, the 2015 sounds horrible in comparison.
Thanks, Ty

 

[NORCAL SS]

DO NOT CUT THE RESONATOR ON THE 15 UPS. HORRIBLE DRONE and sound. Just do the MagnaFlow muffler I have on my site and your done

 

[tbordenet]

Cool, thanks Tony. Will order soon.

 

[jl449]

I had my Magnaflow installed that I got from Mr. Tony... It sounds pretty pretty good!! very happy with the sound. A much throatier sound and NO DRONE!!! left flap valve and resonator. The flap valve is questionable... the muffler place said it looks like a 3" diameter vs the 3.5" only that small section. I almost had him remove it but didn't want to chance drone if I removed it. by the way it was a buck and a quater to get it welded in place.

View attachment 63454 View attachment 63454 View attachment 63456

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[NORCAL SS]

Yeah if you take flapper valve out will be more deep

 

[tbordenet]

Thanks for posting the pics. I think I will go with the flapper delete.

 

[jl449]

Thanks for posting the pics. I think I will go with the flapper delete.

That would be a good idea since it's 3" vs 3.5"
I would have to say the Magnaflow muffler paired with the AFE CAI is freaking awesome. I don't need a dyno sheet to prove its performance. It may be a placebo e ffect but I feel something good when I give it WOT and the deep sound it gives off... Its good!! As a matter a fact it blew my transmission!! 2nd tranny being installed at the dealer.

 

[NORCAL SS]

Glad you like it.

 

[tbordenet]

Very cool! I already have the AFE installed.
Just waiting on my muffler and a foot of 3 1/2 inch stainless so I can delete the flapper. It's strange how they did the stock exhaust after the muffler with 3" exhaust pipe. I'm guessing that's for V4 mode with the flapper.

 

[jl449]

I won't get the Denali back until next week friday. After I get it back i'm going to the muffler shop and have them delete it as well. You drop the rear and front? I was thinking of dropping the rear a bit just to level it out. But I also was thining raising the front to level it out. Keep the 22" but put taller tires. Don't know which way I may go but leaning toward rear.

 

[tbordenet]

I lowered the back a couple inches to level it out as soon as I got it. It took awhile for my custom 26's, after that I lowered the front 2 inches and the back 2 more inches. It came out perfect, for me!

 

[tbordenet]

Out with the old and in with the new. It sounds very nice!

 

[NORCAL SS]

Yup. For the price can't go wtong

 

[jl449]

What is the factory oem exhaust tubing made of? Is it aluminized steel? I'm asking because I'm going to eliminate the flapper and the muffler shop doesn't have 3.5" stainless tubing. He said he can use standard exhaust tubing which is aluminized steel.

 

[tbordenet]

Pretty sure the factory exhaust is stainless. I ordered my 304 stainless 3.5" from Summit. I also used stainless mig wire to weld it.