This paper proposes a multidimensional adaptive coefficient (MAC) module to improve the performance and training stability of flow and diffusion models. It expands conventional one-dimensional coefficients into multidimensional models and adaptively adjusts coefficients according to the inference path. MAC is trained using simulation-based feedback via adversarial enhancement, demonstrating improved generation quality and high training efficiency across various frameworks and datasets. This provides a new perspective on inference path optimization and encourages future research that leverages training-efficient simulation-based optimization beyond vector field design.