My Alcatek ecu has an anti-knock protection so its pulling the timing as well..and blinking the CEL when the knock is detected at the same time... It is that my car was initially mapped for E5 fuel and now since it's gone, I feel much safer adding the booster anyway.
Interestingly, I was visiting my friends in Kerry last weekend, and I filled up on AppleGreen station in Tralee. The car felt more responsive and more economical at the same time! I was getting mixed opinions about AppleGreen fuel, but it seems like the one in Tralee has a good batch...