Can someone tell me if this will work. I'll put an adapter on stock feed line coming out of fuel hat so the stock fuel pressure sensor will still increase/decrease voltage to pump. I'll run 8-an from there to filter then rails and from the regulator run 6-an to a bulkhead fitting on the fuel hat for return. I have a Walbro 450 in the bucket now with stock lines, stock rails, and decka 60s. I'll be adding Holley rails and Aeromotive reg

 

It's in a 2013 5.3 Silverado

 

Atomic? George?

 

I haven't messed with the newer trucks but where is the pressure sensor located? Do you still have the bypass valve in the tank?

 

[QUOTE=Atomic;5365463]I haven't messed with the newer trucks but where is the pressure sensor located? Do you still have the bypass valve in the tank?[/QUOTE

I think the sensor is in the top of the fuel hat. I don't have the bed off the truck yet. I removed the regulator when I put the Walbro in last year.

 

So currently you dont have a regulator on there? I said you plan to add one, not already have one.

The way I understand the new system is the pump voltage is based on vacuum pressure in the intake manifold, basically running the pump slower when the flow isnt needed (idle/cruise), and increasing the voltage when demand is high.

So if you gut the filter and regulator in the tank and still use the FPCM in its stock calibration it should work fine with an aftermarket rail and regulator up by the engine. I think most guys just max out the FPCM table to make sure the pump is never under powered.

 

That's what I was looking for, thank you for the help