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      02-10-2013, 01:29 PM   #3
BEAR-AvHistory
2018 440M-Sport MPPSK/THP
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Drives: 2018 440M-Sport MPPSK/THP
Join Date: Jun 2011
Location: NC - USA

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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

2018 440M-Sport MPPSK/THP - 2017 CX-5 - 2016 Genesis R-Spec Coupe - 2013 135is Cab 6MT/JB4 - 2009 V-Star - 2009 Expedition 4X4 - 1998 Ranger 4X4 - 1965 Cobra MK-IV Dyno Tuned 477WHP - First Start.