To lower exhaust temp (and engine heat load in general):

1/ Intercooler: An Audi 5000T unit fits well in the driver side rear air
intake. Only tricky part is to get the right S-hose for the tight
routing. Self made one are no good as I experienced!
Can easily lower exhaust temps 100F or more!

2/ Free flowing exhaust. And better breathing in general.
Even 2.5" "performance" and "turbo" mufflers make a difference
on temps compared to straight pipe when I tested.

/Martin
--
Westy 1.9l Turbo Diesel
Quantum 1.6l Turbo Diesel

New and used parts for sale, gas and Diesel:

    http://www.cs.yale.edu/~jag/vw/forsale.html

Martin Jagersand                 email: jagersand@cs.jhu.edu
Vision & Robotics lab, CS Dept          jag@cs.yale.edu
Johns Hopkins University         WWW:   www.cs.jhu.edu/~jager

        Slow down and visit the VW diesel Westy page:
          WWW: http://www.cs.rochester.edu/u/jag/vw
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