Rising fpr

[Frankenstien93]

now when i install this does this work in conjunction with the stcok fpr or do i just remove the stock one and replace it with the one that i have

[Structure240sx]

in conjunction. it raises fuel pressure for every pount of boost it sees

stock fpr's are 1:1 ratio. one pis of fuel pressure for every psi of boost

after market (FMU's) rasing fpr's can be anywhere from 4:1 to 12:1

[Frankenstien93]

so i can t off the vacuum line to go to the rrfpr but as far as the gas lines will i have to plumb my own or can i use the existing lines at the fpr is so should i go before or after it.