Two years have come and gone now it failed the California smog test on Hi NO.

!983 380 sl no EGR!

test results are:
15mph 1403 rpm 25 mph 1255rpm
CO2% 14.4 14.40
O2% 0.18 0.12
HC 103 max 124 62 max 68
CO% 0.30 max 0.91 0.18 max0.71
NO ppm 1306 max 886 fail 1142 max 638

After driving home from work 1o miles at freeway 65plus mph took the car in and they let it idle for a few minutes and tested it. 75 degrees temp outside.

Any ideas on what I can adjust to improve the NO numbers.

Thanks.

The smog test place has a shop next to it that they can diagnose and repair/adjust test the car for 250.00 pass or don't pay. It is starting to sound as a simple option.

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Thanks, Juan