User blog comment:73.192.181.54/Multiplayer Math/@comment-30074072-20161213131815/@comment-73.192.181.54-20161213164243

I've tried to math out tuning kits in several ways but none of them have worked out to be accurate. That formula on the tuning kit page makes no sense to me. But yes, the tuning kits have different effects on the same car at different ranks.

Fake speed should not matter. It will all math out in the end if you have the formula worked out.