Quote:
Originally Posted by fc227
Emissions chip installed. New Cat. and she failed on the NOx
HC - CO - NOx
limit 132 - .42 - 921
tested 57 - .02 - 1407 (fail)
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im facing the same thing...does your egr function? check for proper operation while engine is running by putting your hand underneath, blocking the diaphragm..it should stall engine....could be plugged shut with carbon, like mine was...i have a reject sticker from mass rt now, hoping for better luck on the retest