fuel pressure reg
03 October 2009, 07:54 PM
#1
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fuel pressure reg
are sard fpr 1.1 or rising rate? the reason i ask is im going to have my car remapped but my original fpr is weak and cant keep up with the boost pressure.just wanting to know which one to get.my car is a 94 jdm wrx
04 October 2009, 10:50 PM
#3
You want to go for a 1:1 ratio FPR...
However it's unlikely that your current FPR is Weak as it's only a return line actuator, and limits the flow back to the tank therfore holding pressure at the injectors, created by the fuel pump.
I would say to look at replacing your Fuel Pump (Walbro for example) if it's not already been changed, as this is the source of the Fuel Pressure... not the FPR!!
However it's unlikely that your current FPR is Weak as it's only a return line actuator, and limits the flow back to the tank therfore holding pressure at the injectors, created by the fuel pump.
I would say to look at replacing your Fuel Pump (Walbro for example) if it's not already been changed, as this is the source of the Fuel Pressure... not the FPR!!
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