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In Reply to: Which NGK plug is equivalent to X5DC?? posted by JamesM on May 01, 2001 at 13:21:15:
Thanks!
James
james_535@yahoo.com
IMHO, don't do it.
Bosch Super Copper plugs are as good as they get and cost is not that expensive. It would be nice to have Bosch Silvers, but I don't believe Bosch has an equivelent plug in the silvers. I have used NGK in other high performance engines and when the going gets tough the NGK caused pinging.