DreXeL said:As a Japanese import the ECU is mapped for the 100 ron fuel the Japs get. Running 95 ron won't just cause you to 'simply lose peformance', you run a high risk of detonation. Severe Detonation = dead engine.
SUL/Optimax is the least you should run it on. Ideally you should add octane booster (or thinners ) to take it up to the 100 ron it is mapped for.
Seriously ? Add off the shelf paint thinners ?