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spark plug gap

579 Views 2 Replies 2 Participants Last post by  463supra, 
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does the gap make a differece when dynoeing? I just put in some NGK 3330's gapped at .315 and wonder if the larger the gap the better the dyno and the smaller the gap the better the idle?
Jeff
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R
.0315 is ok. It will miss alittle at idle. NGK's idles rough. Only way to get rid of that is to make a bigger gap, but you might miss at high boost. I would leave it.
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Yes the idle is rougher than with the stock plugs but not bad. It doesn't try to stall or anything. It sounds kinda rough like I may have something in store for the person next to me:rolleyes:
Jeff
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