User blog comment:73.192.181.54/Multiplayer Math/@comment-30074072-20161213131815/@comment-30074072-20161213135506

@ original poster, again, you rock. And TK bonuses are listed on the performance stat pages for each car here on the wikia. Very useful.

Another useful page is the Nitro Efficiency Index, which lists speed modifier values for each car.

As an aside, it lists CamaroSS and Hommage as having a 100%/no speed modifier...