Truck fpr and boost
06-06-2015, 05:44 PM
#1
Truck fpr and boost Hi with a returned fuel system and the truck fpr with boost would this damage it .. ? Wondering based on boost was not in the original plan of the engineers? Or would it work as a rrfpr?
06-07-2015, 08:10 AM
#5
the stock reg. is adjustable if you turn the little tamper proof torx in the center of the diaphragm. it is touchy mine was 58 and I turned it to 50.
as far as boost reference I have never watched it but it does reduce pressure with vacuum so I whould assume it adds with boost being a diaphragm style but I have never witnessed it rise.
as far as boost reference I have never watched it but it does reduce pressure with vacuum so I whould assume it adds with boost being a diaphragm style but I have never witnessed it rise.
06-07-2015, 10:12 AM
#6
Factory is not a rising rate regulator. It will not rise 1:1 with boost. So if your base if 50 and u run 20lbs of boost your fuel pressure drops to 30. Anything less than 42-43psi and your spray pattern is crap and your injectors flow less than they are rated at.
06-07-2015, 11:13 AM
#7
have not noticed that but im at 10# boost. I will check mine with a guage and some air pressure and see if it rises at all. I know it lowers with the engine idling. and I set it up this way as seen on some of denmah's builds. i'll post back with my results.
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06-07-2015, 02:56 PM
#10
yes the newer intakes have no boost/vac reference and no return line(deadhead) but the 03 ones have a return line and a vac line from the intake to the reg.
both of my 05 engines had the single fuel line and no return or adjustment screw.so I swapped to the older intake with no egr and return fuel line setup.
both of my 05 engines had the single fuel line and no return or adjustment screw.so I swapped to the older intake with no egr and return fuel line setup.
