I'm open to this. Can you clarify whether you are recommending this for the benefit of LiBCM? Or, is cutting this wire just your preference? The reason I ask is that I recall in your original thread about this mod @retepsnikrep mentioning that cutting this wire caused a hit to fuel economy.Yes, I always recommend cutting the WHT/GRN wire heading to the DCDC converter. This forces the DCDC to output 14.x volts (like a normal car's alternator would). Cutting the WHT/GRN wire still allows the MCM to disable the DCDC entirely (which is controlled by GRN/BLK).
Howdy folks, here's a video showing a quick, simple modification that prevents the ECM from controlling whether the DCDC is charging the 12 volt battery. This means the DCDC will always keep the 12 volt rail at 14.x volts when the car is running (or in autostop), unless the IMA battery is...
I look at it this way. Anytime there is activity from the IMA, Regen or Assist, there is a load on the engine, either positive or negative load. I hate it when the Assist kicks in and I see a big (-) ATDC on the timing gauge until you get around 3K, then the timing starts to advance good for HP...