So a friend of mine has an 09 6.7L and brought it to me with complaints of excessive black smoke even when just lightly on the throttle, hard starting, and after test driving it, seemed like a little performance loss as well. I scanned the codes and came up with:
P0471 exhaust back pressure...
So recently my 2013 Ram 2500 5.7 came up with a P1004 code (Short Runner Valve control performance) and so after taking it to the the dealer they recorded an SRV valve actuator failure and replaced the srv $301. Check light back on, returned to dealer and they said it needed an intake manifold...
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