sprite Report post Posted May 27, 2019 What are the recommended spark plugs for the LP640? I've seen NGK (2316) DCPR9EIX and Denso (5337) IXU27 Iridium recommended. Do these need to be gapped or are they plug and play? Edit: Seems like the IXU24 are the same heat as the original LP640 plugs. Quote Share this post Link to post Share on other sites More sharing options...
sprite Report post Posted June 7, 2019 Swapped the coils with new ones and put in the Denso IXU24 gapped at 0.75mm. My car was on original plugs and coils and I was getting some random misfires. Those are gone now and car runs buttery smooth Quote Share this post Link to post Share on other sites More sharing options...
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