Power system having attachment-based engine control

A power system for a machine is disclosed. The power system may have an engine, and an operator input device controllable to affect operation of a plurality of different tools that can be removably attached to the machine. The plurality of different tools may include at least a first tool capable of consuming about 50% or more of a total power output of the engine. The power system may also have a controller configured to detect attachment of the at least a first tool to the machine and, based on a signal from the operator input device, selectively increase a power output of the engine when the at least a first tool is attached to the machine. The controller may also be configured to selectively decrease the power output of the engine when the at least a first tool is not attached to the machine.