Hey guys, I'm new to this forum, but was wondering if anyone knew what would be the best exhaust for my new 2021 GMC Sierra 3.0L Turbo Diesel? I really don't want to do a delete.
SGTSanUSMCDMAX
Best Exhaust for a 3.0L Duramax
Welcome, and Semper-Fi. When it comes to modern diesels with DPF systems, there is not a whole lot you can do to modify the exhaust. The pipe(s) are designed in a way to allow for the best possible cooling and airflow at the same time, which is important because when in a regen, the exhaust temps get VERY hot. That is why since the DPF came out you see larger exhaust tips. At least on the 6.6. Not sure about the 3.0.
Semper Fi!! honestly with the dpf system you won’t don’t need an exhaust. Someone did a 4” exhaust from the dpf back and it really didn’t change the sound. These trucks already have a straight pipe.
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