I’ve been having trouble getting the ansewer to my question
I have a mild built lq9 hoping on making from 400-430 rwhp
I got 42# injectors that I am going to install but would I need to upgrade the stock fuel pump since it it fairly new on the truck like 10k miles on it or would it be alright with it even with the bigger injectors

 

My go to fuel pumps are Walbro 255 internal and Bosch 044 external. Make sure you get real ones from a trusted source.

 

I have an 2006 Silverado which are returnless do I just change the pump on the module or is there a mods I need to do