Maybe you should stop butchering other peoples hard work without:
a) Permission of the original modder
b) any proper knowledge of the real cars and vehicle dynamics in general.
All engine curves are based on the book ' The Unique Cosworth Story' as Bazza has explained in the manual. Same goes for the Hewland FG400 gearbox ratios.
Ai as a measuring instrument for realistic laptimes is the same as using a sundail as chronometer.