Originally Posted by
Jim P
The ecm does exactly what?s told to do within the confines of how it is programmed by Cummins to Chrysler/Fiats specifications. As a tuner, you enter in your desired changes and the ecms predefined programming takes care of what to do with those values.
I agree HPT is not as refined as it should be but the Cummins powered dodge is also not its main target audience or focus, very little focus towards the Cummins powered dodge.
HPT is nothing more than a tool to gain access to some tables and parameters that the engineers choose to give access to and interpret values within the calibration of the ecm as they understand it. There are errors and misinformation in what they give but the same can be said for the Cummins engineering side as well. Once again, the 2003 ecm is NOT a 2006 ecm. Vast differences here in how the operate and parameter values between the two. Do not assume because it?s a 2006 engine that a 2003 ecm should just be able to just recognize that fact and morph itself into a 2006 ecm and the world turns out perfect. Before diving too deep into things, do solid research before things really get out of control and you end up with a 6000 pound paper weight.