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emissions test

  1. mfitz725

    Failed emissions

    My 94 Exp failed emissions on nox. I am getting codes 172 and 176, heated sensor indicates lean condition on left and right sides. Lean fuel mixture can be a cause of nox failure according to the info from Georgia Clean Air Force. Does anyone have any suggestions for correcting the problem.
  2. D

    Muffler emissions question

    So I live in canada and have to have my 99 ex emissions tested every 2 years. If i install a cherrybomb glasspack muffler or any other high performance muffler will that affect the emissions output for my test?
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