I disagree somewhat in that our gold dome autocrats keep moving the goal posts for those of us with older rigs. This may or may not apply to a 1994 FZJ80, but when my 1987 FJ60 was manufactured in Japan and subsequently tested in Colorado, the standard was ppm, and now it is "grams per mile" on the treadmill. Also, it was simply tested at idle and at 2500 RPM with no load, now they romp on it all the way up to 60 MPH.
Note that the drones who inhabit the testing places are pretty clueless about a lot of things, such as how manual transmissions and clutches work. In trying to get my poor old 2F to make the rollers go fast enough I could hear them redlining it. I once watched a drone pop my hood, look at the right side of the engine bay, close the hood and check off the box for the presence of a smog pump (it's on the other side on a 60, she was looking at the AC compressor.).
To further add to our collective misery, you used to be able to get collector's plates once your rig was 25 years old and be done with smog testing. Now, our esteemed legislators, in their attempt to save humanity from the throngs of old Land Cruiser blackening the sky, say that these same rigs must pass these new, tightened standards every five years even with collector plates, and the ONLY way to routinely skip the dreaded trip to AIR Care for the $25 shakedown is to either pay for some local mechanic's kid's college fund (see above) or have a rig that is 1975 or older. That means my 1976 FJ40 no longer qualifies. Even though it is
FORTY EIGHT YEARS OLD and getting older every year.
Ask me how I REALLY feel about smog testing along Califrado's front range...