Quote:That's to prevent knocking, high octane fuels are more resistant to combustion and thus more resistant to knocking which is essentially uncontrolled combustion. A proper engine management system can pretty much keep any engine from knocking regardless of power or fuel type. You can fill a Ferrari with regular fuel and it'll run just fine because the EMS will compensate.

 

Where high octane fuels might benefit this engine is with the supercharger. Since the fuel is more resistant to knocking the charger pressure can be increased without running the risk of knocking.

 

well you can put pure alcohol in an engine and it'll fire, for a little while. you certainly can't put 87 in a Ferrari and run it just fine, I would implore you not to try.

 

edit: the EMS your talking about controls how much fuel is sent through the injectors it does nothing to change the octane, ethanol or quality of fuel being delivered through the injectors. It'll pass pure water if you put it in the tank!

---