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I only have injector cycling noise. No tapping. Lifter was one of my concerns as soon as the p0300 came up.

Injectors are brand new OEM 6.4 Ram. The original injectors won't fit without spacers which is why I never stuck with them to begin with. spark plugs read good.

here's the stock read
106551

Earlier this year I installed ARH long tubes, and a 6.4 Power Wagon intake manifold and 6.4 injectors. I've gotten the injectors scaled to a close setup for now. I replaced both upstream o2s with new...

Thank you for the insight. Will be testing in the morning and hoping for a bit better outcome. Thanks again guys.

So far, I've added 1-3/4" long tubes with high-flow cats and a resonator(to take it easy on the neighbors at 5am), swapped a 6.4 ram intake manifold and 6.4 ram injectors, and the S&B CAI for the...