Ah Poland, I thought you were talking about the US where a lot of the population is absolutely useless in terms of car mechanics; but yeah on the car forums I frequent tossing the mechanic a Benjamin is the usual tactic to have a tuned car in places that have inspections like California.

I guess it's a symptom of the only people willing to be learn to be a car mechanic and do inspections being part of the same group which generally see emission/safety regulations as being overburdening