Hi:
White smoke is usually an indication that coolant is getting into the combustion chamber. This is usually the result of a bad head gasket or other problem with the head. You may want to have a second opinion on the topic.
Also, why would anyone drill holes in the exhaust system? First, it will not pass inspection, and second it increases the chances of CO2 poisioning.
Joe
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Tuesday, October 14th, 2008 AT 1:07 PM