Hi i have a new sierra im gonna go turbo on next month the problem im having is i wanna run E85 with it and im pretty sure the flex fuel pump won't keep up. Does anyone make a drop in flexfuel pump that can keep up? Or is there any other way to get a setup to keep up with out doing a complete fuel system from scratch?

 

More info on the truck? Since your flexfuel I'm assume your returnless fuel system. Best bet is to convert to a return system, get an aftermarket fpr, and run at least one walbro 450

 

Truck is a 2013 6.2 going front mount and i wanna run around 8ibs no other mods planned for now, but my goal is to hit high 500 to 600rwhp on E85. Yes its a returnless system. If i was gonna convert it over would that freak out the pcm i know there are some tables for that in the tune and im not really sure what to do about it.

Edit: What about the zr1 pump is that flex fuel and would that drop right in? I think they both have that variable voltage system dont they??