[s-cars] EM type, chip upgrades and cracked heads

[Dave Forgie]

Mihnea and others:  When these cracked heads show up, are  there any
correlations between the EM type, the turbo, the chip set, etc.?  What I
was thinking when I asked the EM question a few days ago was, if you go
to an upgraded turbo and/or a chip set that makes 300+ hp and you DO NOT
upgrade the EM,  the probability of burning valves, e.g. 1, 3, and/or 5,
AND/OR cracking the head (e.g. around the exhaust valves or exhaust port
areas) increases dramatically.  I would like to do a litter
forensic-type "epidemiology" (sp?) on this data, if it is available.

Dave F.