my car has been having the same issue now one I run a hard session.
15 min sessions with cool down is fine. But when I run 20-28 minutes my car won’t fire up for a few minutes after I shut it down.
what did you wrap it with?
Just a small heatshield wrap. Definitely worth a shot in your case
https://www.amazon.com/gp/product/B01126RCFQ/?tag=tmo302-20