CCS Posted November 12, 2017 Report Share Posted November 12, 2017 I am deleting my OEM belt driven water pump and Thermostats, replacing it with EWP150 Electric Water Pump soon and like to seek advise on how you would run yours? Using which function. This car is 70% track, 30% road use. Should I use one of the Aux channel to run PWM? Is it necessarily? Or should I use GP Output? But, how do I overcome the issue of it switching on/off when the temp is at switch over point? Using Timer? Quote Link to comment Share on other sites More sharing options...
mapper Posted November 12, 2017 Report Share Posted November 12, 2017 Yes use a AUX PWM Channel. Feed the signal to a Solid state relay. Quote Link to comment Share on other sites More sharing options...
Davidv Posted November 12, 2017 Report Share Posted November 12, 2017 EWP is an advantage because you can disassociate your water pump speed from engine speed. So you dont get cavitation/pumping losses at high rpm or insufficient circulation at low rpm... Think about what happens in a normal engine when your thermostat is shut. Coolant still circulates around the block, its just partitioned the engine coolant circuit from the radiator one. when you use an EWP as a thermostat, you have no choice but to introduce new cool coolant every time you want to circulate coolant around the engine. Depending on where your coolant temp sensor is, this can lead to see-sawing of the EWP turning off and on when the temp sensor sees this coolant change. In my opinion, best way to use EWP is to set it to pretty much constantly circulate engine block coolant and then just keep a thermostat in place to do the job of a thermostat. Which is to introduce cold coolant when necessary. Quote Link to comment Share on other sites More sharing options...
CCS Posted November 14, 2017 Author Report Share Posted November 14, 2017 say if i dont have enough pwm channels. Is there any other ways to drive it effectively? Quote Link to comment Share on other sites More sharing options...
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