HHO units and performace diesel programers

by Bryan
(Alberta)

How would a HHO unit work with a performance diesel engine that is currently being over fueled with a race tuner to make huge HP?

If HHO acts as a catalyst to increase combustion efficiency shouldn’t the power output also be greatly increased as more fuel is completely burned?
Will a FS2, EFIE or MAF/MAP sensor enhancer be needed if the programer is capable creating custom tunes? (eg. changing timing/fueling.