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Old 08-17-2003, 04:54 PM
manny manny is offline
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Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
I would try retarding the ignition timing a few degrees, before I would look at shims.
If the C/R is actually higher than before, you could also try the very highest octane gasoline that you can find.
2007 C 230 Sport.
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