No I haven't changed anything. Barely passed emissions when I lived in DC, on the original faulty ignition parts no less. MD limits must be lower. Refer to my original post, it lists the car's current condition as it pertains to this issue.
I just ordered some plugs and an air filter as well as new injectors & seals. Going to pull the fuel dist & air meter and finally replace the air housing boot and the two molded idle air hoses I've had in the trunk for a couple of years now. The originals look OK but have hardened up and are no longer pliable. I've been meaning to do it but then I get to thinking 'car runs fine why bother' and of course I look at what I have to take off to get to those parts and it kills my motivation LOL. At least now since I have to pull all the hard lines to get the injectors replaced I'll have an easier time staying motivated.
I'm hoping new injectors & seals, air housing boot, and ICV hoses will get me where I need to be. Otherwise screw it I'll apply for a waiver LOL

BTW does anyone know if doing the R16/1 resistor removal trick(providing I can find the damned thing) will cause an increase in HC numbers? It advances the ignition from the stock 6 deg retard to 0. Supposedly it will increase fuel economy, and logic tells me an increase in fuel economy may in some way be a result of less unburned hydrocarbons flying out the tailpipe.

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'02 BMW 325i
'85 300D 450k
'93 190E 2.6 170k(killed by tree)
'08 Ducati Hypermotard 1100S 6k
'06 Ducati S2R800 14k(sold)