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Great! Thanks! I'm feeling like these article is dedicated to me, is written as a response to questions put by me, thanks again!
Anyway, I think that the best solution is to combine fuel saving additives with with a substantial reduction of overall vehicle weight, some cold air intakes and a better exhaust. If we'll add to all these a right driving style, it will be perfect.
Maybe I'll try some of these.
PS: Good article