Control method and control system for internal combustion engine with turbocharger

The present invention provides engine control including antisurge control (30) capable of receiving a boost pressure of an engine turbocharger, receiving an engine speed, and looking up a static control parameter lookup table according to the engine speed and boost pressure so as to select a control parameter indicating the air flow requirement (32). The selected control parameter is sent to an engine control unit (60) so as to control the engine using the air flow requirement indicated by said control parameter.