Power setting and big tires

[89Vette]

So comparing apples & oranges shows me...what?

Well, how great my Corvette is, of course!

...And gut instinct is a good substitute for???

Well, more accurate methods, of course.

Ummmm...yeah, you would have to be able to splice into a vac line, & find a firewall grommet, & mod a universal a pillar pod...not too difficult...

And, not spend any money for a short, temporary measurement!

The tc locks @ lower rpm in "normal", @ hwy speed.

Best I read the chart, it may not be much different with light throttle openings.