If you have stock fuel pump, try and swap it out to see if your walbro is a defect. It's possible that your fuel pump is bad.

 

im going to check all the fuses first, since that sounds the easiest. .. i was thinking about swaping fuel pumps out yesterday but when i got the car started it ran good. and the fuel pump was kickin out enough fuel @my power level which is damn close to 400hp.. im going to swap the fuel pump out next. thanks so much for the answers guys this helps alot