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  1. 3.9L V6 Specific Topics
    New member here. My future son-in-law has a beat up 96 3.9L Dakota. Standard Trans. It failed the smog test due to High Nox. everything else passed. Note that NOX was low at 15 mph Test Results: 15 mph: 1473 RPM, CO2-15.05, O2-.16, HC-63, CO-.41, NO-0036 25 MPH: 1488 RPM, C02-15...
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