Need help with Setting a FPR correctly JRSC 550cc - Honda Prelude Forum

edulerPrelude · 06-01-2006, 09:08 PM

If anyone has experience with setting a FPR I would really appreciate it, I have a JRSC 9lb pulley 550cc inj and walbro225 hi flow JR pump. I was unable to find my stock pump so installed a FPR and got rid of the factory FPR...from the threads I've read my idle FP should be around 40-43psi and static set to be around 70psi and WOT to be over 100psi. Well setting the idle is no problem I have that at 42, HOW DO I CORRECTLY SET THE STATIC FP, I have been taking off the vacuum hose and FP rises to about 55psi, I have plugged the vacuum line and increased the static FP to about 60psi but that raises my idle to about 50psi which I know is not going to work well, and hell I have no idea how to adjust for the WOT. So PLEASE HELP if you know about FPR's and settings.

THANKS

sharkcohen · 06-01-2006, 09:56 PM

I think you are sorely confused. If you have 550 cc injectors you want to run stock fuel pressures and programmable engine management. Static fuel pressures of 70 psi and fuel pressures over 100 psi are in regards to running a boost dependent, mechanical FMU (and stock injectors), such as supplied by the JR kit.

Use your new adjustable FPR to bring down your fuel pressure at idle to the factory recommended range, so as to adjust for your Walbro fuel pump.

edulerPrelude · 06-02-2006, 05:51 AM

sorry but i am already running an emanage, i forgot to mention that up there....so with boost what should my idle and static pressures be? and how can increase the static pressure without messing up the idle, or is there a sweet spot in between?

sharkcohen · 06-02-2006, 04:41 PM

You should be checking your fuel pressure as outlined in the Helm manual, and adjusting your adjustable FPR to get it within that range.