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Old 03-12-2001, 05:56 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
All ultra-x plugs are pre-gapped. On my race car I open them up to .055", a total pain but at 7500 rpm______ there is a difference on the dyno!! Since your engine won't go there, just install them!
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