tim4daflow

hello i have a 2008 silverado 5.3 that is supercharged on 12 lbs currently im on my stock flex fuel pump that came(factory) in the truck im maxing out my 60# injectors but the fuel pressure is rock solid at 58lbs, im planning on upgrading my injectors to a set of id1050s and running the truck on e85..... does anyone know how far you can go on a flex fuel pump or will i need to upgrade the pump and if so any recommendations would be greatly appreciated

FFDP

iTrader: (2)

Must be pretty rich to already max out 60lb's on pump gas and still have fuel pressure.

They say 500-550whp on pump gas is the upper limits on a FF pump.

You will be out before that on E85.

tim4daflow

i have no clue how much power the truck makes it has quiet a bit done to it, so what would be a good upgrade to the flex fuel pump was thinking a walbro 450 but im not sure how much more they flow then the flex fuel pump