Question:

Is Dave Leonard running a water cooled turbocharger (bearing
cartridge)?  Anybody else?

http://www.airpowersystems.com/wrx/aps_turbo.htm

No stock airplane would have them.  But, as a way to combat high EGT,
and continuous high output, it sounds like a good idea.  I realize
there would be a small thermodynamic penalty, and some extra load on
the cooling system.


Regards,

Matt-

Yes. Modified 2nd gen stock turbos are water cooled.