The relays would explain your no start unless manually powered situation. I don't know about the over fueling though.
What boost are you running? Is it possible that a boost spike has blown the diaphagm in your WUR?
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
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