If you have over 25K on your plugs they could be the problem. Yes a pound & a half can be enough to cause a misfire if your car was already near the edge.
I run a custom map 6 & ramped up 1/2 pound at a time with Terry reviewing the logs. Got to bad logs then backed down 1/2 pound.
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Kevin
Dravit Gray, Black Leather, Moonlight Roof, Red Calipers
2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT
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