high flow pumps draw bigger amps you cannot control because it has a lower winding resistance its like a built in current draw inside the armature oem/ stock pump just on draw 4 to 7 amps at 50 percent duty cycle high resistance winding means you can definitely boost the voltage to boost the LPH. the good thing about boosting the pump is you can deactivate the booster by wiring a relay so when you needed a higher flow you can simply flick the switch. boost on demand when you want it
