Well, I was trying to get my car tuned today and the car ran fine,but as soon as it went into boost the fuel pressure gauge is showing the fuel drops to zero.
I have recently around 2 months ago changed my pump over to a bosch fuel pump from tpis.com. My setup also is 42lb svo injectors with with holley adjustable fuel regulator with procharger fmu. i am running stock fuel lines and stock fuel filter. any ideas anyone? other info on the car is in my sig.

 

are you using a booster pump ?? you could be using all the fuel in the line and psi is dropping what model pump

 

It's a Bosch pump from tpis that is rated to hold up to 850hp

 

ok how about when your driving along how much pressure do u have then? u have a fuel press. gauge in the car?

 

when i am driving along i have around 60 to 70 then when i nail it it drops down to zero,but recovers real quick.

 

sounds like the fmu is bad or not hooked up correctly def. don't wanna lean any car out under boost

 

Also check the lines so they dont are squezed or bent, so they are a restriction for the flow..

 

you don't need a regulator and FMU. If you are going to tune it in the computer, throw away the FMU.

 

if he doesnt use a regulator what controls fuel pressure?

 

The FMU is a fancy fuel regulator. It increases the fuel pressure as it senses boost.