OBD2 port, nothing comes up on the Volvo tool.
Something is getting hot, I think, but what gets hot in traffic that doesn't get hot when being driven hard on track? Something that is in air-flow on track but isn't in traffic.
What is that thing?
failing fuel pump? Matt thinks it's flooding, not dying. I could not smell fuel today though.
clogged injectors? They are new, and work find when the cars "aired" for 10 mins
air leak or blockage? (do you have an idle air hose? do you have an oil overflow that goes back into the intake?) All the pipe work is new, PCV does go back into the intake, yes it has an IAC valve.
vacuum issues? What type of issue?
faulty wiring - how hot does it get under there? What wiring?
dizzy cap / HT leads / plugs / rotor arm / plug coils (delete as appropriate) All new a month ago.