I'll check if there is a MAP sensor on this car, but today I've made the next test: I've connected monometer into the fuel line just before pressure regulator on the fuel rail. Then I've regestered decreasing of a fuel pressure from 55 to 45 PSI while accelerating. Then I've blocked the line just behind regulator and made a test drive on the 1st gear. Car ran better, but presure dropped heavily from 57 to 25 PSI during accelerating. So I conclude fuel pump is faulty.
Tomorrow I'll check it.
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