Are you planning to replace only fuel injectors? Won’t you need to upgrade the fuel system?

@Alexshao1

4 ай бұрын

Stock fuel pump can handle up to 300hp which is more than a stock block can handle

@ThorbitTTV

3 ай бұрын

@@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

@Alexshao1

3 ай бұрын

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

@jamieg4435

3 ай бұрын

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 👍