If smoke isn't appearing, verify that your truck is equipped with a standard exhaust at a dealership after activating the mod.
Users running the game on OpenGL may experience "pixelated" smoke that resembles low-resolution blocks, whereas DirectX 11 provides a smoother appearance. Community Feedback SMOKE IN MY TRUCKS V1.0
“If you are using mod trucks, it will not always work because modders often make modifications to the exhausts.” Steam Community Critical Installation Tips If smoke isn't appearing, verify that your truck
To ensure the mod functions correctly, follow these community-recommended steps: If smoke isn't appearing