electrical fuel pressure gauge. not only does that sound like a bandaid, i think it may cause more problems at idle at the very least. basically, the injectors have very little need. with the stock setup, the ecu knows that and sends little voltage and thus less flow so that the regulator can regulate within its means. however, if the pump is at max blast when there is no need, there is nothing to say it is actually within the means of the regulator.