NNBS Sierra Denali Exhaust options

lknox21

New Member
Sep 10, 2013
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All,

Im looking to get some headers and a catback exhaust system for my NNBS Sierra Denali. Im trying to keep the tone as discrete as possible yet maximize my hp gains. Any recomendations?
 

nickyreno

Active Member
Oct 7, 2013
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Lake Tahoe, NV
Yea, don't do a cat back. Just get a muffler. The Borla XR1 is a popular choice. You already have 3.5 inch exhaust wit the 6.2l

As for headers, only do long tubes, but you best be tuning it to really see the gains.
 

Jared

Administrator
Feb 8, 2012
20,572
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North Dallas
Run a catted long tube setup! Catless will be loud, if you run catless to save cash, it can cost you in the long run, ask me how I know! You will also need an inspection hookup.

Also, the longer case mufflers are quieter. Running a muffler with a bullet can help too.

I want your stock muffler if you get rid of it! Hell, I would even trade you.
 

nickyreno

Active Member
Oct 7, 2013
1,201
0
36
Lake Tahoe, NV
Run a catted long tube setup! Catless will be loud, if you run catless to save cash, it can cost you in the long run, ask me how I know! You will also need an inspection hookup.

Also, the longer case mufflers are quieter. Running a muffler with a bullet can help too.

I want your stock muffler if you get rid of it! Hell, I would even trade you.

If he won't, I'll send you mine if you pay the shipping when I get my XR1 on
 

Jared

Administrator
Feb 8, 2012
20,572
117
63
North Dallas
cool deal, I want to quieten my shit down since it is dumped due to how low I am. I decided not to do new exhaust right now as it isn't a priority. But a simple muffler swap around here is less than $50.
 

Jordan

OG CGM Member
Jan 25, 2011
4,260
3
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35
Old Town, ME
22" Case 3" SI/SO Magnaflow. Always what I recommend for a quieter but still nice sounding muffler. Had it on my NNBS and loved it.
 

lknox21

New Member
Sep 10, 2013
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Its an AWD. I have heard a few clips from youtube with AR headers and a magnaflow muffler and it sounds great. I already have a BB tune and will have to get it adjusted again anyways due to the new tire size so I thought I would go ahead and get an exhaust set up while Im at it.