Originally Posted by
Rogeyboy
Interesting theory... But i doubt its the cause as the reg is an upgrade for the fiesta rst for use with the stage 2 195 chip and the rate at which is rises is what the engine requires whereas the ford 1 at that level doesnt rise at the nessacery amount, but i i'll give it a go.
Need a fuel pressure gauge in the car really to watch it, it its rising at all!?
I'm not so sure Roger
As I understand it, at 1 BAR boost the ECU will be doing the fuelling based on the 1:1 (standard) regulator, so it will be expecting the fuel to be at 4 BAR (3 BAR idle + 1 BAR), and on the chip will be an amount of "squirt" for that pressure, whereas with a rising rate jobby, it will have the fuel at something like 4.5 BAR, so for the same "squirt" you will get more fuel than expected.
Pity with the injectors but at least you get them in and running now!
I've decided to skip the stage 2 stuff and go megasquirt over the winter. Will run standard for now til mine gets some miles on it.