[s-cars] Higher Pressure FPR for 200q20v

[Michael Gough]

> Why would you want a higher pressure fuel regulator? I can understand that
> this would put more fuel into the engine for a given injector pulse but if
> the engine were to run rich the ECU would shorten the pulse via the oxygen
> sensor readout. I've seen debates about this and rising rate pressure
> regulators and some people say that they are useless as the and heats up the
> fuel and wears out the pump quicker. Any other opinions?

Yes if you use higher pressure, or bigger injectors, it just screws you
over.
The way I see it, if you are flowing 300 CFM of air through your mass
airflow sensor, with the stock injectors you will get a pulse that lasts x
milliseconds and flows y amount of fuel. Now if you raise the fuel pressure
20%, or put in 20% bigger injectors, the x millisecond pulswidth will now
flow 1.2 times y amount of fuel. This will make the engine run 20% rich. You
will have to recalibrate the ECU for the bigger injectors, or the different
pressure.
Mike