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Robert: re lean running, I don't think I have an issue with that -- FRK, larger Collins 370 injectors, K-bike fuel pressure regulator. Recall that I did the FRK testing with the Brisk DOR14LGS plugs installed early last year? You noted from photos I posted on the forum that the plug burn was nearly perfect. Looked at the piston crowns with a scope, no carbon build-up with the Brisks. Not claiming these plugs work miracles, but my S likes them. They're just part of my tuning equation. That said, no rap against the high-quality Denso plugs.
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