I'm unsure which MHD stage 2 map to use for my car. The map options are:
91 Octane / 95 RON
93 Octane / 98 RON
95 Octane / 102 RON
Where I'm getting stuck is the RON vs Octane dilemma. It seems fuel providers in the UK kinda mix an match quoting RON & Octane on their products. For...