I had that same Billet Fuel Filter which caused a fuel pressure problem as soon as my car would start boosting over 6lbs. It's what caused me to crack a ring on my #6 piston when I was running a 100shot at the track with my stock bottom end. I was troublshooting that issue for a couple of days when it finally dawned on me to check the fuel filter. Removed the screens, took it for a test drive and problem was solved. I hadn't checked it before because it was only 2 weeks old! Needless to say I am back to the $9 fuel filters from now on:)
Rob (Miami) 91 TT 11.83 @122.7 mph on Drag Radials(Stage 8+)Stock Turbos w/NOS 12.66 @112.4 mph on Street Tires(Stage 5+) "Injectors=$900...Drag Radials=$300...NOS=$500...The look on that 911 Twin Turbo owners face=PRICELESS"
"If you have no lag, you have no turbo." Corky Bell 
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