Just ordered a walbro 255 lph fuel pump and a larger set of injectors. After installing them, I'll obviously have to change my tune to scale to the new injectors, and I know how to do that. What will i need to do to accomodate the fuel pump? Will the car be able to lower the duty cycle enough to maintain proper fuel pressure, or is it going to require a serious reflash to operate correctly with the new pump?

 

the car will run rich...fuel pumps do require retuning

 

just re tune it for more fuel? anytime you add more fuel or air you should get tuned. period.