98 Octane

After a couple pulls (automatic transm WOT) i get half engine light "powerloss" Code 30FCC (boost pressure too low, leak tightness. It happened at the longest log at the end

Driver and passenger, WOT RHG 2nd/3rd Gear Pull N54l 135i MHD Stage 2 V8, VRSF downpipes and charge pipe, no other mods