True and partially true!
It is more dependent on the tuner, than on the hardware. For instance, I have 750cc fuel injectors and go with a 3.0 FPR...on my stage 5+...
But guess what: for the stock injectors, at stage 3+, I had used a 3.5 FPR (it`s more like a Nordic/JZW use).
The FPR, in it`s self, is not a performance part, it just support other performance parts, in a synergyc system (most important, the ECU software, not necessary the injectors or the fuel pump).
So unless you have all the other parts that require the 3.5 FPR, it`s no use to put one on your car. If you use it ignoring the system requires, the car will not run right (worse gas management, bad knocks, s.o.).
so i have a 1997 b204 stage 3+ tune with stock injectors and stock pump. is this something i should look into? im planning on upgradingmy turbo and fuel support to 19t and 60lb injectors then soon after a walboro 255.