Sure, but that's because the ULEV standards are calculated as absolutes.
If by "absolutes" they actually measure it as opposed to making up shit off the top of their head, then yeah, I guess "absolutes" is fine.
The question is whether two engines with the same emissions technology, but with different MPG rates, will produce the same amount of emissions.
No. that wasn't the question. Nobody asked that question. The real question that
I'm curious about is if this latest attempt to change the issue and hide the fact that you have no clue
at all about what you are talking about is going to work, or if you are just going to dig yourself in deeper.
I got ten bucks on "deeper."
So, for example, say that Honda produces a 4-cyl, 1.6L engine and a 6-cyl, 2.5L engine. And say Honda uses exactly the same type of emissions-reducing technology for both engines. If the engine in the first car gets, say 30mpg and the engine in the second gets 20, then surely you agree that the first is burning more fuel every mile than the second. And even if each engine is equally emission-friendly, in terms of its efficiency at releasing emissions, the absolute amount of emissions will be greater for the larger engine than the smaller one.
Deeper it is.
No. I do not agree. There are a lot of problems with your assumptions and question. The most basic one is that you have the fundamental principle of the issue backwards.
You seem to think that that which increases mpg also lowers emissions. The truth is much closer to the opposite.
Another problem with your assumption is that you seem to think that you can have the identical emissions technology on a 4 banger as you do on a 6 cylinder.
Still another is that you consider the bolt on portion to be the primary component of emissions control, when in fact it is the design of the engine.
That is what will determine the output at the exhaust manifold.
That in turn will determine the nature of the appropriate bolt on.
If somebody were to actually try your little experiment and bolt on the catalytic convertor from a 6 cylinder onto a 4 cylinder engine, you are more likely to
increase emissions (I'm thinking clouds of black smoke,) while decreasing horsepower, mpg, and all that,
if you can keep the engine running.
Speaking generally, a high mpg 4 cylinder engine is going to be dirtier than a lower mpg 6 cylinder engine due to differences in the timing and combustion cycles.
I could go on, but the bottom line is that you basically have it almost completely backwards. Why do you think emissions are measured based on mile travelled rather than by fuel burned?
The equivalence you are trying to draw is false.
But this, of course, is all a big hijack based on your original claim, which was that, because your car is a ULEV, it doesn't shit into the atmosphere at all. As i've noted before, and as you continue to conveniently ignore, low emissions does not mean no emissions. You car still shits in the bird's air, even if it does so at a rate "50% better than average."
Your being stupid (but that seems to be your role, so no surprise.) The point is, that if you are going to propose a vengeance minded bird, seeking recompense for air pollution generated by automobiles, than you would expect that bird to choose one of the most offensive examples of polluting rather than one the least offensive.