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Originally Posted by ZStig
I have a hard time believing that an upgraded pump would flow less than stock pump at the same power level. I'm only pushing 7psi or so
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It only flows better than stock at 80psi if it's getting enough power . Centrifugal pumps take a ton of juice apparently a stock system only provides 1/4-1/2 at best . The recommended Aeromotive wiring harness is a 30amp switch !!! Running them under power can make them fail early as well , which is why I was ok until recently . If ESS , AA, and VF say the regular pump is ok then I'm going back to it . Remember I was chasing the wrong pulley situation when I replaced mine . ( should have just changed my filter ) my two cents . Between my flywheel / clutch "upgrade " and this my new moto is if it ain't broke don't fix it lol . The problem of only improving one point of a stock system is the rest doesn't work together well . If you put in a lower bar fuel pressure gauge to make an aftermarket pump happy then you have to adjust the tune . It's a slippery slope .
My two cents
George