Originally Posted by Dave Henshall
hi mike,
i was just reading from the workshop manual as those figures will be for std 2wd no doubt on std boost, i think,
so the way in which it 'should work' is that it idle you have 3 bar say, then at 1 bar of boost the fuel pressure shuould have increased by 1 bar gauge aslo, so on the 1 bar example to 4 bar ...?
Dave,
Not exactly like that m8.
Standard pressure regulator on an Esc Cos is a 3.5bar item.
At idle you'd get about 2.8-3.0bar because of the vacuum created.
At 0bar boost, you get 3.5bar so at 1bar boost you'd get 4.5bar fuel pressure.
I'm running a 4bar item so at my boost (1.8-1.9bar peak) it SHOULD read about 5.90bar which it doesn't anymore.