My buddy has a 92 civic running a stock fuel system b20b on an s300 v3. His fuel pump went out and I have a walbro hellcat 525 sitting on the shelf. Can he run this temporarily or will this over work thw stock for and injectors?

 

that large pump isn't really plug and play. You're supposed to wiring in a relay and upgrade the power wire. Tell him to get a Walbro 255lph instead

 

That size fuel pump isn't required for the setup and the injectors will yield you either way with them being stock. But as a temporary option you can run that fuel pump until able to get a 255lph