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Why the 2005 Dodge Cummins did not come with an exhaust brake

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Here is a write up by Smarty UDC Pro RT Custom Tuner Rob D discussing controlling the operation of the exhaust brake on the 5.9 Cummins Turbo Diesel Dodge Ram trucks


1st thing, the ecm CAN control the exhaust brake in an 05 to work reliably and quite well.  After comparing the 05 to the 06 48RE trucks (the 06 did come with a factory exhaust brake option) I can see some parameters that the 2006 auto 5.9 Cummins has the the 2005 auto 5.9 Cummins trucks don't.


There has been some speculation on why the 05 didn't come with the brake and most of what I read seems to indicate folks thought the 2005 48RE wasn't tough enough for exhaust brake function for "some" reason.  I don't believe that is the case..........






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