so i started with a programmer and upgraded the fuel system with a Fass and a new vp44 so next i am thinking i want some bigger injectors then a bigger turbo and then possibly get a smarty too i am wondering at what point do i need bigger fuel lines and do i need a hot rod vp44 to keep up with all power adders. I quess i am just curious how much the stock component are good for?

 

Given what you described, I'm guessing that you have the FASS DDRP and you still have the OEM fuel lines and the OEM banjo fittings. Because if you had any other FASS you'd have aftermarket fuel lines and JIC fittings and wouldn't be worrying about larger fuel lines. So to answer your questions.....

First things first. You MUST have gauges if you plan on any HP upgrades. Even at that, a fuel pressure gauge is necessary no matter if the truck is stock or not, especially if you care to protect that new expensive VP you purchased. Having no gauges means you have zero knowledge of whats going on under that hood. But if you're more in line with not caring about that kinda stuff then you may want to look at Banks products since I understand Banks incorporates more engine safety features than other HP products which require you to manually monitor what the engine is doing.

Bigger injectors are a great way to add power, and will be just fine to run with the stock turbo until your injectors get to big. If your injectors are to big, you'll have to upgrade the turbo. But again, knowing your fuel pressure is very important and increasing the size of your injectors will create lower fuel pressure at WOT. Also, you have to consider towing too because if you tow then bigger injectors can push your EGT's to high and limit your truck towing capabilities.

1/2" fuel lines are normal to run with aftermarket fuel pumps like the FASS but if you think thats too big then 3/8" is the smallest size you'll want to go with.

The Hot Rod VP merely uses SO VP pistons with HO VP cam. Its not necessary to run the Hot Rod VP ever and its also not required to keep up with any of your other HP components. Its simply another HP product which adds a little more HP, but at a very expensive cost. Plus it can be less reliable than the stock style VP too.

From the sounds of it you're just getting into this and are looking for info. Well there's TONS to learn to make sure things are done right and you found a great place to find some good info. Adding more HP to your truck is fun but it can be very expensive too.

 

thanks for the insight i have the attitude monitor with the edge so it shows the fuel psi, egt's etc... and i got the fass pump that mounts under the bed so it is a bigger line from the fuel tank to the engine but i was more concerned about the fuel lines from the vp to the injectors. I wasn't sure at what point if any those needed to be upgraded. good to hear that a regular vp44 will handle the increased hp and i don't have to get a hot rod pump to keep up with fuel demand. I have been doing alot of reading on here and appreciate everyones input. I haven't bought a single thing for my truck without reading on here first.

 

Good to hear. Sounds like you're doing it right. If you are interested in larger injector lines from the VP to the injectors then you may want to ask that question specifically since I understand that there is some pro's and con's to running larger injector tubes. I've seen some threads regarding that specifically too so maybe search the forum and see what comes up.

 

Driveability and fuel mileage suffers and little to no gain in power for your set-up, so I don't recommend larger inj lines or push tubes unless you are using your truck for comp use only.

 

ok this is good to hear cause thats money i can put to other more important things i just seen them for sale and wasn't sure when bigger lines were gonna be needed. thanks