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Travel_glampers's avatar
Travel_glampers
Explorer
Apr 18, 2021

After market exhaust brake reliability and effectiveness

We have a 2009 Silverado 3500HD Duramax DRW. It did not come from the factory with an exhaust brake. The reviews are mixed on aftermarket systems (BD and Banks). What experiences have others had wi...
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JIMNLIN's avatar
JIMNLIN
Explorer III
Apr 20, 2021
From what I've read adding a down stream regular exhaust brake can net around 160 hp for braking vs 320+ hp for braking using the EFI live tuning for the VVT Dmax. The computer changes the variable vanes for more aggressive exhaust braking.
There are several GM diesel forums with tons of input about EFI live tuning for the Dmax. Check out a couple of them for more input from actual GM Dmax owners who have used the program.

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