There is alot more adjustment then that. Retarding the timming as far as the distributer can go and the car still runs.
HC'c and Co's will go up but NOx will go down. It will run like shit and have no power but it should pass.
Once it passes you and adjust your timming before leaving the test center.
OR
Clean out your EGR
HC'c and Co's will go up but NOx will go down. It will run like shit and have no power but it should pass.
Once it passes you and adjust your timming before leaving the test center.
OR
Clean out your EGR
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