Before i wound the wastegate right the way it was running 23psi roughly for about a year with no trouble.
Like you say i think it is to do with the fact it gets treated well, oil every 4500 miles or thereabouts and no hard driving prior to shutdown.
I have a friend who races RX-7s and he has many pictures of the car in the pits, brake rotors and entire turbos/manifolds glowing bright cherry red.
'Tis a beautiful site actually, and once again gives me some confidence that my little turbo can withstand the occasional push for 10-20 seconds. He's not running K14s mind you.
