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DailyDriven'88 DailyDriven'88 is offline
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Join Date: Aug 2008
Location: CA
Posts: 181
How far off are you? Post all of your results (HC, CO, NOx etc) along with the limit that you're allowed.

High NOx levels are caused by excessive combustion temperatures. Do whatever you can to bring them down (richer mixture, back off timing, etc). Carbon buildup is also a huge contributing factor. Dont get crazy with the adjustments, as doing so can cause you to fail other aspects of the test.
Old 10-03-2009, 05:56 PM
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