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Old 07-25-2020, 05:52 PM   #1
LS short box
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Re: My New 2019 GMC AT4
Just bought a 2020 Silverado 1500 with the 6.2.

Question? When you deleted the muffler did you delete the two butterfly valves that are in front and behind the muffler?
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Old 07-25-2020, 06:20 PM   #2
Johns 66
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Re: My New 2019 GMC AT4
Quote:
Originally Posted by LS short box View Post
Just bought a 2020 Silverado 1500 with the 6.2.

Question? When you deleted the muffler did you delete the two butterfly valves that are in front and behind the muffler?
No sir...all I did was remove the muffler and put a piece of pipe in its place...no drone at all
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