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Old 07-17-2013, 01:32 PM
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Default 2013 duramax needs a better sound

Got a new 2013 GMC 2500 duramax about 4 months ago. Like the truck, plenty of power and good with MPG. The only thing I don't like is the sound sucks. Would it sound better if I put a new air intake on and a new exhaust. I don't know if its possible with the new diesel exhaust fluid you have to put in these things. Anyone with mods let me know.
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Old 07-17-2013, 01:52 PM
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Here's a video of one....

https://www.youtube.com/watch?v=1XfhIz2tCeU
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Old 07-17-2013, 01:59 PM
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Originally Posted by maddieriley View Post
Got a new 2013 GMC 2500 duramax about 4 months ago. Like the truck, plenty of power and good with MPG. The only thing I don't like is the sound sucks. Would it sound better if I put a new air intake on and a new exhaust. I don't know if its possible with the new diesel exhaust fluid you have to put in these things. Anyone with mods let me know.
I put on the dual exhaust from Banks Power. It is a "cat back" exhaust, which means it bolts on after the Catalytic converter. So, the muffler is removed. The sound is a bit throatier, without being annoyingly loud. And the duals look great !

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Old 07-17-2013, 02:43 PM
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I put on the dual exhaust from Banks Power. It is a "cat back" exhaust, which means it bolts on after the Catalytic converter. So, the muffler is removed. The sound is a bit throatier, without being annoyingly loud. And the duals look great !

got any pics ?
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Old 07-17-2013, 03:16 PM
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got any pics ?
Here ya go !
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Old 07-17-2013, 03:34 PM
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The sound sucks? If I can hear it, it sucks. Guess I must be the odd one.
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Old 07-17-2013, 04:03 PM
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the banks stuff does sound pretty mean.... these engines are BEASTS but don't go trying to hot rod tuner all of it.... stock engine (maybe an exhaust mod) they last forever... you go plugging in crap... we'll see you at the dealership. Btw... don't change the air cleaner... odds are it'll give you some issues, we see a lot of people with issues and they had just went to the local parts place and bought a filter... bring them in, swap a true AC DELCO filter in and good to ride....
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Old 07-17-2013, 04:14 PM
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That straight pipe sounds good, thanks
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Old 07-17-2013, 04:33 PM
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the banks stuff does sound pretty mean.... these engines are BEASTS but don't go trying to hot rod tuner all of it.... stock engine (maybe an exhaust mod) they last forever... you go plugging in crap... we'll see you at the dealership. Btw... don't change the air cleaner... odds are it'll give you some issues, we see a lot of people with issues and they had just went to the local parts place and bought a filter... bring them in, swap a true AC DELCO filter in and good to ride....
I agree -- The OP said 'plenty of power and good mpg" -- so if it ain't broke, don't fix it.
Only thing I did was put on the dual exhausts in place of the original muffler and single pipe. Nice sound, very subtle. Just enough different to tell that it's there.
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Old 07-18-2013, 03:45 AM
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Thanks for posting the Pics - That looks great !!! It maybe in my future plans.
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Old 07-18-2013, 01:17 PM
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The sound sucks? If I can hear it, it sucks. Guess I must be the odd one.
Or it means you are getting old. lol. I prefer quiet as well.
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Old 07-18-2013, 01:34 PM
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Or it means you are getting old. lol. I prefer quiet as well.
Maybe LOL. Guess I was old even 11 years ago when I bought my Duramax... It was the quietest thing on the market back then. Pretty sure the Ford 6.7 is the quietest as of now.
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Old 07-18-2013, 07:56 PM
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Maybe LOL. Guess I was old even 11 years ago when I bought my Duramax... It was the quietest thing on the market back then. Pretty sure the Ford 6.7 is the quietest as of now.
The FORD 6.7L is SCARY quiet for a diesel. first one I seen I thought was a 6.2L it was so quiet. And for a 07 and up DURAMAX, an exhaust won't do much for the sound. Even straight piped an LMM is pretty quiet with the emissions still in place, and the new LML(11-13) is even quieter with 2 cats and a DPF(the DPF has a SCR cat built into the front of it for the urea system).
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Old 07-19-2013, 01:38 AM
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I just ordered everything to delete my dpf. The urea tank was saying exhaust fluid was bad and knocking truck to 55mph for past few months. Took to GM and after $250 they still didn't know what was wrong. They wanted more money for more "testing" then id have to pay for whatever sensors were bad (exhaust is only warrantied to 36k. I thought 100k) so figured get all that bs out and get better mpg too.
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Old 07-19-2013, 04:24 AM
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My '03 LB7 is straight piped with the factory 3.5" exhaust. No cat and no muffler. It's definitely loud but not over top I don't think. Has a nice throaty sound to it.
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Old 07-19-2013, 06:07 AM
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I had this same deal with my 2011 duramax. I asked on a duramax website what was the best way to make my truck sound like it actually had a set of balls, and the answer I got was that the dpf had to be taken out. I'm not happy with the truck anyways so I'm going to hold off and get a 6.7 that I will make sound throaty.
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Old 07-20-2013, 06:50 PM
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I just ordered everything to delete my dpf. The urea tank was saying exhaust fluid was bad and knocking truck to 55mph for past few months. Took to GM and after $250 they still didn't know what was wrong. They wanted more money for more "testing" then id have to pay for whatever sensors were bad (exhaust is only warrantied to 36k. I thought 100k) so figured get all that bs out and get better mpg too.
Exhaust is warrantied to 36K, BUT the emissions system MUST be warrantied to 80K(EPA mandate). Find a new dealer and report your current one to GM as the DPF and urea system is DEFINATELY part of the 8 year 80K emissions warranty.
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Old 07-21-2013, 02:49 AM
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Exhaust is warrantied to 36K, BUT the emissions system MUST be warrantied to 80K(EPA mandate). Find a new dealer and report your current one to GM as the DPF and urea system is DEFINATELY part of the 8 year 80K emissions warranty.
Wow. I wish this was known last week when I was there. But truck did have 80,300 miles
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Old 07-21-2013, 03:37 AM
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Wow. I wish this was known last week when I was there. But truck did have 80,300 miles
Call GM and complain about it.I have seen them Warranty things on Vehicles that are out of the normal Warranty period to satisfy the Customer.Sometimes they will at least split the cost.The Warranty process within the Dealerships is getting VERY tight now.

GM has SO MANY freakin' rules,processes for a Warranty claim it's ridiculous! They come in and audit Warranty claims......If 1 i isn't dotted......They charge the Dealer back for the Claim! As a Tech,You really never could make any money on a Warranty repairs,GM keeps cutting the times you get paid for doing the same exact repair!! Now twice as much paperwork for the Tech to submit[Documentation]...

Service Manager can also Electronically send the claim in and they will reply with an answer,whether they will cover it or not. Hope this helps ya'...[Mike]
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Old 07-21-2013, 03:56 AM
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^^^ Thanks Lone Ranger
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