My fuel system is stock. I plan on running 6-8psi of boost. I have an adjustable fpr that came with my turbo kit. If I use the adjustable fpr will I have to disable my stock fpr? If I use the adjustable fpr and set it for an idle fuel pressure of 40-45 psi do you guys think I will be to lean at higher rpm? Eventually I will be getting a fmu and when I get that will I still need the adjustable fpr and will the stock fpr need to be disabled? sorry thats alot of fuel questions guys but I have a hard time reading and comprehending these other post...

You can run the FPR until you boost. The whole point of a FMU is to add xlbs of fuel for every pound of boost. For example, at 7lbs of boost with a 12:1 FMU you will see fuel pressures well above 100lbs. 7x12= 84lbs added to your current fuel pressure. You want to add fuel for boost, without maxing out your injectors while having a nice fuel curve. And once you are using a FMU, get rid of the FPR as it is pointless and does nothing at that point.

I get what your saying. Now if I run the the adjustable fpr do I need to disable the stock fpr?

Only if you're dropping the idle fuel pressure below stock levels to account for large injectors. Otherwise leave the stock one alone.

awesome thanks guys. One more question then I'm good. Do I have to raise the fuel pressure at all if I'm running stock injectors? If so what should it be at idle? 40-45psi is what I'm reading.

Only time you raise fuel pressure with stock injectors is when you add boost or compression. Until you have the turbo on, with the bolt ons in your other thread, leave the fuel pressure where it is.

what I meant was when im boosting 6-8psi where should the fuel pressure at idle be? sorry should have been more clear.

if im wrong, someone will correct me, but when the fmu raises the fuel pressure, it goes to somewhere around 70 under a certain psi...i think you should get a sfmu if you can just because its somewhat tune-able...

Your idle pressure is fine. 45-50 is great with stock injectors at idle and cruise (vacuum)

As others have said above, you are fine to run the stock injectors at low boost levels, but IMO I think it is always better to upgrade so as to err on the side of caution.

I have a BEGI rising rate fuel pressure regulator with all fittings and mounting hardware as well as a set of 270cc Accel injectors that I will let go for cheap. PM me if you are interested.