Your post followed mine.......
I recall helping with development work sometime back on a turbo'd Nissan,
and the reason I believe what I believe, is that there was a difference in the amount of air/oxygen coming into that particular engine and the amount leaving the exhaust.....it was a challenge that we had to overcome....

It's my observation that when intelligent people don't know something
they ask and try to learn more. When other people don't know something, they either laugh at it or they criticise it. I sincerely thank God
that we are not all alike. Have a good day.-Bob