i obviously misunderstood you seeing as tho when i hear hear "fuel pressure regulator" i think of someone changing the fuel pressure regulator, but yes, you are right an FMU would be one form of changing fuel pressure that would work for up to about 7 psi.

 

well i plan on running around 9 psi should i get the FPR instead of the FMU?

also if i get bigger injectors am i required to get a RRM piggyback?

 

fmu and fpr are basically the same thing they used to be called fpr and are now called fmu's. they are both increasing the amount of fuel being fed into the motor when under boost. sum1 correct me if i am wrong. also i would get injectors for 9 psi and u dont neeeed a piggyback it just would be nicer to have.

 

The FMU is a fuel pressure regulator it just raises fuel pressure with boost pressure. 1 psi of boost = 12 psi of fuel.

I don't believe a piggyback is required with new injectors, but it would help even out the fuel curves.

heh beat me to it.

 

if your going to run 9psi you will need the FMU + injectors.

 

alright preciate the help