I just installed a Walbro 255lph pump. Im 100% positive i did it right. My question is when I first started it up after the install I couldnt hear it at all and there was like .5 gal. of gas in the tank. Now no matter how much gas i have in there, I can hear a low pitch whirr but sometimes like when my AC is on or when Im at idle and i step on the brake, it goes away. If I rev my car i can hear it again. However, the FP guage shows constant pressure. Does this mean the pump doesnt have enough power to stay on?

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Blue Streak -
'95 5.0L Mustang GT convertible | Saleen heat extractor fiberglass hood | K&N custom CAI | Taylor Spiro Pros | Walbro 255lph pump | Kirban AFPR | MSD Cap/Rotor/Blaster TFI | 2 chamber flows w/ dumps | BBK LTs | BBK short h-pipe | No smog or EGR | NOS 75hp dry kit w/ heater & purge | Battery in trunk| Chassis Eng. subframes | Custom 6-pt rollbar | King Cobra clutch | Steeda adj. clutch cable w/ double hook quad. & firewall adj. | B&M Ripper shifter | FMS C springs | Pro3i C/C plates | Lakewood 70/30 struts | Comp. Eng. 3-way shocks | Chassis Eng. LCAs | Fan switch | 180* thermo FMS| Kumho Ecsta 255/40's all around | Coolest neon lighting on a Mustang EVER!
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