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I had a long history of various PS leaks over time. (Lots of track days back then.) Since converting the car to a Spec Boxster, I have not. I suspect it is due to a combination of (a) the underdrive pulley making it work slightly less hard and reducing the heat, and (b) removal of the A/C compressor which has taken away the horrible combination of heat source sandwiched on top of the defenseless PS line (which is itself practically sitting on the hot engine block). A very common kind of PS leak on tracked Boxsters is the melting of the plastic coupling near where the PS line snakes under A/C compressor. I think it's the coupling of a hard line going into the PS pump.
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