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Home >> Chevrolet >> 2004 >> Optra Base, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - 2.0L (L34 GMDAT) - Description And Operation >> Description and Operation >> Fuel System Description >> Acceleration Mode

Acceleration Mode

The engine control module (ECM) monitors the changes in the throttle position (TP) and the manifold absolute pressure (MAP) sensor signals in order to determine when the vehicle is being accelerated. The ECM will then increase the injector pulse width in order to provide more fuel for improved performance.