Another forum member and I was wondering what every one is getting for fuel pressure under boost . I have a electronic fuel pressure gauge and it reads between 49 to 52 psi under boost .Actually it stays there at all times , at all driving conditions . The other forum member has a mechanical gauge , and he said his rises under boost to 90 psi . Can any one with VORTECH experiance tell us what is the correct pressure under normal and boost conditions should be

 

My fuel pressure stays at 51-52 psi during normal driving. When the engine gets into boost about around 3500 rpm the pressure jumps to around 65 psi or so. 90 psi seems way too high. Where is their pressure sending unit mounted? Mine is mounted using the SPX fuel tap.

 

I would amagine mine is on the fuel rail side of the FMU . I saw it down there last time I was under the car , but didnt look to see where it was tapped into . Thats why I posted this . I want to know if Im getting the right fuel pressure under boost .

 

The fact that your pressure does not change makes me suspect that the gauge is on the tank side of the FMU. Do you have a pic of where the tap is?

 

After hearing that the fuel pressure should rise . Im thinking the same thing , that its on the tank side . I dont have a pic . The shop that did install..is the best in town for Vortech and the Mech put my boost gauge on the outlet of the blower.....I got 11psi there..lol . i had him change it to the engine side of the intercooler...and got 7lb's.. Now this !!! I think this shop should get rid of this mech. Think I'll be making a call to Vortech to make sure and then call the shop and have them change it

 

I got under the car this afternnon and did find the fuel pessure sensor was on the wrong side of the FMU . I changed it and now im getting the right readings from it

 

GREAT TO HEAR....


now runs some boost (after tightening le-belt again!!) and observe and record...

s/b 9lbs (min) and 80+psi (±)...

well?

eS

 

Glad to hear that you got it fixed and the system was working properly. I was worried there for a while that it was on the right side and something else was wrong.

 

just re-confirmed.....

mine slams over 80psi once the boost rolls up......

this is the same procedure my vast blower car did; albeit a t-rex aux. pump (later swapped out for the bosch ext.)

 

Hmmmmmm....They changed my avatar...some one must of complained about the bouncing *****

 

that was me i didnt like the fact that she had a shirt on.

 

LOLOLOLOL.....LMAO

 

I think "03 Z 4 for ME" (or something like that) still has the same avatar that you had...