Here you go:
-Fuel cut-out when driving, esp. under WOT.
-Fuel cut-out symptoms range from soft pulsations of power to long-pulse bucking while in high-gear high-load situations (high gear at WOT, or up a grade). MIL may flash if cut-out is severe. Car will also go into hard-limp (no boost, 4500RPM limit) if severe enough.
-P0087 Fuel Rail / System Pressure - Too Low
-P1093 Fuel Trim 2, Bank 1 Malfunction
-P2293 Fuel Pressure Regulator 2 Performance
Increase surface hardening of camshaft lobe for the high pressure fuel pump. Improved intake camshafts
straight from the Sticky, "Common problems..." I'd pull the fuel pressure pump and check the condition of the cam follower and the cam shaft lobe.