I guess u dont know really how RON number really works
For higher ron fuel, to prevent knocking retardant are added in which normally longer chain of hydrocarbon into the fuel to prevent the fuel from self ignite. That the additives you are talking about, there hardly any performance additives
If you want more power, you do it by adding higher octane fuel not RON. like pure ethanol, hyrogen etc etc but at the risk tat your car might explode because it not designed to operate in such high energy environment. Baciscally, the more flammable the fuels the better it is, the more power you can gain per litter of tat fuel. To calculate "scientifically' is by looking at the otto atkinson miller cycle etc the car engine is based upon. Again, it took me 4 years to learn about and I am lazy to explain it in details those themo cycles
adding more variables make for a more inconsistent result. The fixed variable should be the driver but instead it become the test variable as well
In retrospect to your answer, Public uni rent those equipments for a reasonable fees for a valid reason
UM, USM, UTM and any respectable university mechnical lab will have it and it available for public use
The only thing you have to do is write to the dean and explain why you want to use it.
Of course, it will be more difficult to have those High performance lab like the one used in P1 and P2. The main reason why it difficult because engine fuel consumption is a closely guarded secret
at least I better than some wikepedia warrior that think they know everything by reading wikepedia