Your English is better than half the kids on here from the US...lol!
But anyways, if you are running a stock setup, with stock boost, I see no reason you "need" to run Super. If your engine is in proper mechanical condition, then you shouldnt notice any knock with 87 octane. However if you crank the boost and start tuning for a bit more extreme output you may want to run it to avoid getting a knock sensor warning.
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Eagles may soar, but weezl's never get sucked into jet engines!
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