--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> wrote: > You can't always make a car pass emissions testing by making > adjustments. Sometimes you have to replace worn parts. Found the same thing out myself. But to add to it, sometimes, all you need to do is replace worn parts, rather than tuning. I failed emissions horribly last spring. Turned out to be a clogged injector. Replaced, and passed smog with no problem after that. Didn't need to tune a single thing, just replaced my injectors. Before you go off tuning, and fiddling with the CO adjustments, you need to first insure that you engine is able to efficiently burn fuel it recieves, not if it has the correct air/fuel ratio. While your HC may have passed, you didn't say what they were. Check your spray pattern on all 6 injectors, and make sure that they are kicking out a good spray pattern. One fowled injector can kick HC up into the 1,000's range on ppm. -Robert vin 6585 "X"