I may take a drive up to GA after work to help Mike with the car... It is kinda hard to diagnose things over the phone sometimes... and a second set of eyes never hurt anything...

 

yeah, a second set of eyes is always a good thing.

so you see that you have fuel pressure with either pump assembly, yet you dont get a increase in FP with boost, but you get fuel pressure increase with shop air?

have you had a look under the car to see that there isnt a dent in the line, so you do get fuel pressure @ idle & everything looks good, but when your @ speed & load, the supply isnt there due to a possibly line kink, dent, etc?

GL

 

He did say he looked over all the lines. I wasn't there but I assume if he saw a dent he would have brought that to attention.

 

Here is the deal, the car before had an AMS 37R and a BR double pumper and made 700 hp until the motor dropped a valve, fuel delivery was not an issue, a stock motor and fuel hanger was put back in shortly afterwards and this is when the problem showed its ugly face...

Wasn't able to get it up there today, possibly later this weekend...

 

Worked on the car for a solid 6 hours today with no resolution to the fuel issue... no kinked lines, not crushed lines, small boost leak at the throttle body shaft seals, pressurized 20 psi into the FPR and fuel pressure only raised 10 psi, rail and FPR have already been swapped twice... swapped in a new ECU, no change... I am honestly stumped...

 

Like you said Freddie, not much more we can do. I did do some googling yesterday and stumbled upon this, https://www.evolutionm.net/forums/sh...d.php?t=448157
Maybe my car really just doesn't like stock injectors like those guys?

 

Possibly Cody, just never seen it before... we will see how it reacts when you get bigger injectors next week...