So are you planning to do an adapter for the DV which also takes a meth nozzle ? This would indeed be a breakthorugh idea IF 2 of those (one for each DV) would not cost more than half the cost of a meth elbow.
But the rest of the stuff with placing the pump in the engine bay, etc. is obviously just to copy Vishnu but more probably to avoid debates that could favor the Procede
And about the PWM confusion (knowingly introduced by BMS to add to confusion ?), a PWM "pump" means nothing, it's just a way to control the pump speed. The real "PWM" stuff that all other meth kit vendors refer to is the PWM valve controlling the nozzles while the line pressure behind the valve is constant, much like a car injector. That is the thing ensuring high atomisation at all spray levels.