Truck fpr and boost
Thread Starter
Staging Lane
Joined: Mar 2013
Posts: 62
Likes: 2
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?
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.
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.
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.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Wasnt' a vac port/barb on the FPR on the truck intake I have? It's one of the newer intakes though. I thought these were dead headed and had the FPR in the tank on the 06+ Ls setups?
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.
read above this post... /\ /\