You misunderstand me guys, i didn't meant super fuel, like it is used in racing, I meant the normal fuel (leaded fuel)
So to make things more clear, I would like to repeat my thread again:
my car is designed for unleaded fuel, and I would like to use leaded fuel.
so what should i do, i heard from technitions, that I should remove a filter built on the tailpipe.
And replace some electronic plugs for un-leaded to leaded fuel plugs.
But I'm still suspecious. Any comments!!