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Old 05-25-2015, 01:12 AM   #3 (permalink)
fryzia23
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With any aftermarket HFC/TP you might get occasional catalyst efficiency below threshold. Just clear it and don't look back. Unless it keeps coming back so you could do as dislimn already mentioned. Just make sure it codes for downstream sensors. HFC/TP if installed properly should not get any upstream 02 sensors codes.
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