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Thanks.
regarding fuel pressure, as I understand it the high pressure is there to enable pre-injection, for knock reduction; high atomisation and so efficient burn.
Of course generating such pressures takes power and this engine is aimed at economy- so the pump has an ECU- switchable extra piston for high pressure. So the fuel pressure isn't just engine speed dependent, the ECU will drop it at low loads.
I'll try the circuit as-is to start with.
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