Quote Originally Posted by Road View Post
There is a lot more than just changing one table to make switch control the fuel rate. You don't have to use fuel temp sensor either you can use IAT, EGR temp, etc any sensor that ecm needs less would be best. You will need to edit several axis and disable some bits and then turn off diagnosis for the said sensor. Then you will need to have a switch that is capable of controlling the resistance and no one switch works with every method. So that being said there is many ways to control fuel rate and a working setup takes a lot of time to make it work and be reliable. There is way more involve than most know and requires little more than a cax file that's why you only see the best of the best offering it and very seriously doubt they will share their hard work.
I did some more searching on the B0457 table and it sounds like that is that table being used. We can currently buy the switch with instructions on how to pin into the ECM. I'm just not sure of the axis within that table for each "tune". I now understand that it is simply a limiter and not an actual DSP tune.

I did ride in an 2016 LML with the switch and a well know tuner's file. It does feel like it has 5 different tunes in it, not quite like my 03 LB7 or 06 cummins (both have DSP and CSP switches) but if you didn't know any better you would think it had a DSP5 switch.