Does FPR fitting require remap?
Quite simply, my v2 STi has an ESL daughterboard and 255 pump and is remapped to 320bhp, do I require a further remap to be able to fit and run a FPR?
Thanks. |
It will fine as long as you set the FPR to the pressure being run now:thumb:
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myself, about to do a full parallel fuel rail system. do i need to tune if i raise the pressure by just a very tiny bit. from stock 35psi to 36psi?
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Any fuel pressure change, up or down will have an effect of some kind.
In closed loop lambda control, a small change won't matter, as the ECU is controlling the AFR. In open loop, in other words anything over cruise settings, a pressure increase will richen the mixture. Whether that's a good or bad thing will depend on where you were to start with! Some FPR's. rising rate for example, will alter the mixture more percentage wise, relative to load. |
What is the reason for fitting the FPR?
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your car already has a fuel pressure regulator, we're just talking about replacing it with an aftermarket unit.
it's there to make sure your injectors stay at a constant pressure |
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