This is the first emssions test since I converted my '85 to the Duraspark II ignition. The truck passed with flying colors! In the last couple of years, the cat converter and the egr valve, and egr plate have been replaced. I also installed a ported vacuum switich(4 port) in the water pump outlet, the type used in the 1983 trucks that came stock with the DS-II ignition. I was real worried that this truck would not pass. This made my day! I figured that I'd let you all know, as passing emissions was a major concern when it came to doing the DS-II conversion. Have a good one everybody! The readings are below.

Emissions Test: IM-147

Hydrocarbons(HC) My truck-0.52, State standards-4.00
Carbon Monoxide(CO) MY truck-8.63, State standards-40.00
Oxides of Nitrogen(NOX) My truck-2.03, State standards-5.50