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The first OBD regulation in the United States, which required manufacturers to monitor some of the emission control components were installed on all 1991 and newer vehicles sold in California. The last year of the E30 was 1991 i believe..... So if you don't have a 91'...... you dont have a OBD!!!! But there is a check service connecter towards the front of your engine on the drivers side right next to your intake manifold, just remove the cap!! AT

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17y ago

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