is a walbro fuel pump a needed upgrade if u have bigger injectors and running higher boost??

 

It depends on for one how much power are you planning to push. In most cases you need to change both the fuelpump to aftermarket aswell as the injectors aswell as the fuel rail which i didnt have to do with my old car and fuel pressure regulator.im not sure with these cars about changine the fuel rail and regulator but on my honda i had to. The more air you plan on putting into the combustion chamber you gotta have enough fuel to help that air create more power. if not youll run lean and overtime *boom* exactly how much power are you exactly looking to get to the wheels?

 

99% of the time, yes.