Plugs add no power (unless the plugs comming out were bad, in which case you gain what you lost back).

Its more about longevity.....double plats for example last longer in wasted spark ignitions like ours. Splitfire, +4s, all hype/marketing BS...

1999 Amazon Green SVT Contour (#554/2760) "People demand freedom of speech as a compensation for the freedom of thought which they seldom use." -Soren Kierkegaard (as posted by Jato)