Hi, I have a 2001 silverado lq4, that I installed a turbo on several months ago. Anyways, I was wondering if a single inline walbro 255lph is enough to support around 10 psi of boost. I had it laying around from another project, so I decided to run it. Before I take it to get tuned, I want to be sure that it will flow enough fuel. I'm running the stock fuel pump in the tank, and 60lb injectors. Any one know if it'll work? Or should I get a 300lph+ fuel pump

 

This all depends on how much power you are creating, you can either get the pump that you need based on current injectors or you can get a pump based on the power you will be putting down.

here are a couple of calculators I found by googling 'fuel pump calculator'

Fuel Pump Calculator | Fuel Calculators | Resources | DeatschWerks

Fuel Injector and Fuel Pump Calculator