Ignoring carbs for the momment
we can see how tbi will not tolerate as high of compression as direct port injection.
and there are many many reasons for fuel to not ignite just because it reaches an ignition temperature that is just so far beyond any even caring,when some of us cannot even figure out the displacement of our engines when we bore and stroke them.
Im very happy I have Tech here to do the simple DCR math for me.
I contacted 76 with a couple ,what I thought was simple questions about fuel/octane etc,and they offered to fax a simple answer to me. I got around 70 sheets of formulas from them. I understood less than 1/2.