Walbro Pump...Not Whining anymore?

[GSXlaunch]

Anyone else have problems with their Walbro pumps going bad very early? I have been having massive problems with the car going full lean as soon as I step on the pedal. Its to the point that I dont even drive the car. I've checked everything... swapped out computers; AFPR's, and am not sure where else to go. I get just over 14volts to the pump when the car is running...The one thing that I have noticed is that this Walbro pump (HP255) is not making the usual loud whine like it was before. Infact, it sounds about like a stock pump. With the car idling and the pump cover plate removed, I have to lean over very close to my Walbro to hear it. This pump only has about 2500 miles on it. If I do need to replace it, what pump would you guys recommend? I need lots of fuel as I am running an SCM61 turbo, and 780cc injectors and plan on running above 25psi on race fuel at the track. I know the pump is working because if I dissconnect the power wired from the battery the car dies. Any and all help is GREATLY appreciated. Please guys I need assistance. This car is ready to hammer out an 11 sec run if I could just figure this nightmarish problem out.

 

[1fast97gsx]

I've got the same problem also with the same turbo and same injectors. My pump never made the usual whining noise I expected it to make, and I have been getting some knock at anything over 20 psi ever since I got the pump. I read in a few other posts that the pumps were redesigned to now be quiet.

 

[GSXlaunch]

Mine use to run fine...the whine was very prominent and easily heard over the exhaust. Now, after the car has been sitting for about two months it sounds like a stock pump. I am going to reinstall a stock fuel pump and see if that helps my lean situation at all. I guess I will try another fuel filter to be on the safe side but the filter I have on there now only has about 2k mile on it. This is driving me crazy.

 

[djpast]

maybe the filter ON the fuel pump is bad....