The "street" mezeire ewp is heavier than a stock ls1 pump by about 2 lbs. I didnt notice a change in power or normal cooling temps from installing mine. The ewp flows more at idle, but the mechanical flows more at mid/high rpm. The biggest benefit of an ewp is having the choice to run it and the fans when the car is not running to quickly cool the motor.
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1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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