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Audi
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1993
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100 CS, 2.8 K, Standard
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Repair and Diagnosis
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Engine Performance
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Emissions
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Emission Control Abbreviations
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"W"
Emission Control Abbreviations: "W"
WU
Warm-Up Catalyst
WU-OC
Warm-Up Oxidation Converter
WU-TWC
Warm-Up Three-Way Catalytic Converter