OK, I'm a newbee to F.I., and I'm trying to get up to speed. I'm trying to understand how the computer behaves when I increase the fuel pressure. As I understand it, in open-loop mode such as WFO, the computer times the injector pulses from a look-up table, depending on speed, vacuum, etc. This I understand. Increased fuel pressure will result in greater fuel delivery. However I get a little confused when the system goes into closed-loop mode. Would it be that the computer, reading the "overly rich" conditions caused by the higher fuel flow, decrease the pulse-width of the injector events so as to achieve stochiometric burn? If this is so, I wonder will there be any change for everyday driving if I kick up the fuel pressure? As a related question, how much can the computer compensate? In particular, I'm installing a 305 system onto a 327: can the computer adapt enough to compensate for the increased displacement, at least through the break-in phase? I'm a little unsure here, because there are so many variables and I don't want to fry the motor during it's first few minutes of operation. As a precaution, I bought an inexpensive fuel/air ratio monitor, but it's going to be a nervous few minutes until the thing warms up.

 

when you go to WOT the car basically ignores everything and goes into an area of the programming that has very limited scale. it will stay at teh very wide pulse widths and allow the additional fuel in.

later
tim