Replaced HPFP.
Alerted of failing HPFP by limp mode at WOT, but thankfully was not stranded on the side of the road. Logged fuel rail pressure at a feeble 700 psi, now I'm back to peak 2400. The old pump lasted 22.5k miles.
Also replaced 12 yr old throttle body and intake manifold gaskets. They were surprisingly pliable for their age.
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