@@Alexshao1 the stock wrx fuel pump won’t last long your maxing it out at 300hp its better to upgrade to a walbro fuel pump. I ran into a fuel starvation issue when I upgraded to the pinks because the system was losing fuel pressure. The stock fuel pump motor will burn itself out because it’s over working itself
No need to change the fuel pump as they are capable of fueling more power than a stock colt engine can handle, I’ve only changed the injector to STI pink 565cc to lower the fuel duty cycle from 80% peak to now mid 50s . The pump it set will be fine haven’t had any fueling issues
There is no need to replace the fuel pump when upgrading injectors. If you do upgrade the pump to for example a dw65c youll need an fuel pressure regulator. 43psi is what your pressure should be, no more no less. I am running sti blue injectors, dw65c and tomei fpr on my colt 👍
Are you planning to replace only fuel injectors? Won’t you need to upgrade the fuel system?
Stock fuel pump can handle up to 300hp which is more than a stock block can handle
@@Alexshao1 the stock wrx fuel pump won’t last long your maxing it out at 300hp its better to upgrade to a walbro fuel pump. I ran into a fuel starvation issue when I upgraded to the pinks because the system was losing fuel pressure. The stock fuel pump motor will burn itself out because it’s over working itself
No need to change the fuel pump as they are capable of fueling more power than a stock colt engine can handle, I’ve only changed the injector to STI pink 565cc to lower the fuel duty cycle from 80% peak to now mid 50s . The pump it set will be fine haven’t had any fueling issues
There is no need to replace the fuel pump when upgrading injectors. If you do upgrade the pump to for example a dw65c youll need an fuel pressure regulator. 43psi is what your pressure should be, no more no less. I am running sti blue injectors, dw65c and tomei fpr on my colt 👍