Originally Posted by
99EJ6T
stock pump is only good for about 60% over stock, far less when its older. for the most part, when dropping pressure below 50 psi with big injectors, idle tends to suffer as the lack of pressure effects its spray pattern.
a 12:1 fmu w/ guage and a 255 pump can be had for less then $250. which is still good for a 5-7 psi set-up, well assuming your using 240 injectors.
btw: you did not add the management that is required for the use of those bigger injectors.
You will be using a SAFC, Chrome, or Hondata system regardless to fine tune the fuel. Otherwise, you'll be trying different combinations until you hit on the right FMU/boost level, or you blow it up!
And, being as how RC's are designed to work at 43 psi, I don't think idle will suffer under 50.....So, that's basically bullshit. Can you find a FMU cheaper? Yes. Can you find a return setup cheaper? Yes.
According to the man, you'll need 55 psi of base pressure for it to run right, so you'll be buying a regulator either way.