I dont know what they define it as but in general a single large pump with variable controller tends to work in drag cars or even track cars seeing longer use but not so well on street cars that see alot of idle and low rpm hours. This is the reason dual and triple walbro setups are popular because they are meant for continuous use on the street and only one pump is running most of the time.they do claim to hold 130psi even under continuous use, so what do they consider continuous?
they also claim it to be a 2 stage pump to be more stable under light loads
not sure if they are really after the street cars or tracks , obviously their line of fuel cell stuff does not apply
The pumps include a 2 step controller for pump speed control. The pumps can be ran in one of two different speeds. A low speed control for low fuel consumption requirements or at full speed for high fuel consumption requirements