still in v 8 mode excess torque is generated as a result of the increased manifold pressure a spark retard signal reduces excess torque a v 4 mode hold off complete signal is based upon the offset signal subtracted from the end of the preload base duration alternately the v 4 mode hold off complete signal can be based upon the apc meas exceeding apc des or after a timer expires once the v 4 hold off complete signal goes high a first deactivation device control solenoid can be turned on and a first injector can be turned off an apc mode to v 4 signal is generated based upon an event delay from the first injector off signal a v 4 mode signal is based upon a event delay from the first injector off signal referring now to fig9 a a spark retard generator 350 is shown a signal selector 352 receives a apc des signal for a deactivated mode such as for a four cylinder apc des4 and a desired apc signal for the activated mode such as for an eight cylinder apc des8 the signal selector 352 selects one of the input signals based upon a signal received from a cylinder deactivation mode circuit 354 for example the cylinder deactivation mode circuit 354 generates a u201c 1 u201d to identify the deactivated mode and a u201c 0 u201d to identify the activated mode the signal selector 352 outputs the.