Worth noting that the car doesn't have a sensor to detect the type of fuel, instead it (may) adjust the timing until it either starts to detect knock/detonation and then back it off or reaches the max value. This "learning" can take a while as there is a large lookup table of engine load, rpm and timing that it has to update.
Worth noting that the car doesn't have a sensor to detect the type of fuel, instead it (may) adjust the timing until it either starts to detect knock/detonation and then back it off or reaches the max value. This "learning" can take a while as there is a large lookup table of engine load, rpm and timing that it has to update.