2010 GMC Sierra 6.2l Dynomax 3" Ultraflow

P/N 17547, just a muffler swap, stock resonator still intact. Just a bit more rumble than stock, No interior drone. Very happy with it. Truck is otherwise 100% stock at this point. (only a month old)

Category:

Autos & Vehicles

Tags:

• 2010
• gmc
• sierra
• 6.2l
• truck
• exhaust
• sound
• clip
• rumble
• dynomax
• ultraflow
• performance

[cameronblair6]

1500HD? I took a very similar one for a drive, balls off the walls but couldn't justify the mileage for the power difference from the 5.3.

[Clancykenney]

@cameronblair6 What did they rate the one you drove? I get 13-15 around town 18-20 hwy. I think the 5.3 is only 2-3 more... This truck has the NHT package. Sort of like a heavy half from the years back.

[ae232]

is that a 2500HD?

[Clancykenney]

@ae232 no, its a 1500. ;)

[Clancykenney]

I must make a new video it is so much louder now that its burnt in...

[josh1303]

What is the stock piping is it 3 inches all way through?

[MrDpb119]

Had a 2500HD. Traded it in on a 1500 6.2L max trailering package. AMAZING.... Will never go back..... 17mph on average towing/mountains..... and HP..... Just go for a test drive.....

[ak2007r6]

@cameronblair6

They actually get pretty good millage once broken in. I did something similar to the OP and just replaced the muffler (along with a drop in K&N and upgraded mid pipe) and a custom tune and am getting 21MPG on the HWY last time I calculated it. Pretty good for that size truck IMO.

[lcarrasco212]

nice