The Shell 100RON fuel was supposedly quite good, however it was never available in WA.
I have sent an email to UnitedPetrol about the availability of the 100RON fuel in WA. I do hope we get it. My
ECU is a Jap
ECU and is tuned for 100RON (Which the Japs have had for yonks) and its currently pulling timing to compensate for the 98RON I currently use. So it will be nice to run my car on what it was tuned for.