Quote Originally Posted by lswing View Post
Is this just a bad case of heat soak? Symptoms sure sound like it. Zorb, have you had a hot summer in this car? The heat soak could be compounded by some of the performance issues such as failing turbos.
When I brought it home from PA via Florida last July It was very hot. It ran far better than this, in hotter and more humid conditions. Also, it's running great today despite being warmer than yesterday.

Also, my first one never behaved in this way, though it admittedly had far fewer miles when I sold it.

And to answer someone else, I have the extra radiators installed still, yes.