what's everyone running for fuel pressure ? quick rundown on my setup...walbro 255 hp pump, 720 primaries, 1000 secondaries, SX FPR, stock size rubber lines. I just installed the FPR and have my base pressure set at 45 PSI, which is not enough. I'm going to lean condition at about 14 PSI of boost. Any input would be great. Thanks

 

is your fpr hooked up to add pressure under boost? What ecu are you running?

 

Base pressure being set at 40psi you should have any lean spots unless your map is lean up there. Base fuel pressure on my FD is 32psi...

Jay7

 

the FPR source is coming from one of the ports in the UIM right after the TB. The regulator is said to be 1:1 rising rate ratio. Stock ECU with S-AFC2.

 

stock ecu with 14psi of boost????? i thought the stock ecu only handle 12psi.. if that.....

 

i,ve got a little bit extra timing pulled out of it by the crank angle sensor. I know i need a standalone.(that's next on the list, funds pending)