Want your Z1 to run cooler??? We Just got done with our redesigned water pump housing, This design eliminates the 150* bend out of the water pump "which its prone to get air locked or trap air in the water system" and direct the water straight into the impeller, this is much better for water flow and doesn’t turbinate the water which causes heat and air bubbles.. Through testing our pump housing flows 6 GPM more water at just 4,000 rpm!!!!! the test also showed the water to come out much smother hents the increase in GPM.. We also eliminated the port that bypasses the water from the back side of the thermostat.. [IMG][/IMG][IMG][/IMG]