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I have two 044 s on mine , and the system pressure is maintained as per normal adjustments.
There are/have been several CIS similar threads going lately and I loose track of which is what. But have you checked that the screen on the WUR is clean? Underneath the union that joins to the FD.
"Dumb question - what controls the reduce fuel pressure at the WUR? The WUR restricting flow or FH internals." - The bimetallic finger/spring pressure on the internal diaphragm in the WUR controls the variable pressures - Cold Press, Warm Press, Boost dump press. The system pressure is controlled by the spring loaded needle valve in the top of the FD - except yours, apparently.
Have you pulled it out and checked it has a spring? As per post #50.
Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-)
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