Realistic Exhaust swaps Farming Simulator 25’s basic smoke stages for a dynamic exhaust model. Fuel quantity, air supply, turbocharger, boost pressure, engine temperature, and the soot limit all work together, so they decide the smoke’s color, density, and volume.
Features
- Engine load, RPM, and throttle position make the smoke react.
- Turbochargers have realistic response times.
- Hit the throttle, let the RPM drop suddenly, or change the load, and the smoke pattern changes too.
- Older engines usually smoke more when they are under load.
- High RPM with no load leaves the exhaust nearly clear.
- Starting the engine gives you a distinct, dense puff of smoke.
Cold starts can bring white vapor or bluish-white smoke from unburnt fuel. It fades as the engine warms up. Cold temperatures and high humidity also make water vapor stand out more.
What the engine is doing decides which shade you see:
- Deep black
- Brownish-black
- Grayish-brown
- Bluish-gray
- White
- Bluish-white
After particles leave the pipe, their color stays the same. They naturally age, turn lighter and thinner, and slowly dissipate.
- The smoke starts right at the visible exhaust pipe.
- Particle size and exit velocity scale with engine power.
- At idle, the output stays gentle.
- Heavy load brings a stronger exhaust flow.
- Multiple exhaust pipes are supported.
- If an exhaust is hidden or invisible, it produces no smoke.
The throttle position controls how the smoke volume builds:
- Below 30%: minimal smoke
- Up to 50%: moderate amount
- From 50% upwards: increasingly intense
- From 75% upwards: maximum smoke volume and exit velocity
- Wind changes the direction and turbulence.
- Warm air lets water vapor dissipate faster.
- Cold conditions and rain make the vapor easier to see.
- Rain cuts down the soot in the smoke plume.
The engine library comes with 16 engine profiles for:
- Older and modern diesel engines
- Gasoline (petrol) engines
- Naturally aspirated and turbocharged engines
- Hot-bulb (semi-diesel) engines
- Two-stroke engines
- Methane-powered engines
- Small and large engines
It assigns the profile automatically from the fuel type, vehicle category, power output, model series, year of manufacture, and detected exhaust technology.
Special Vehicle Types
- Modern diesels with AdBlue: virtually smoke-free
- Gasoline engines: no black diesel soot
- Motorcycles: primarily heat shimmer
- Bicycles: no exhaust emissions
- Electric vehicles: no exhaust emissions
You can customize the engine profiles in data/engineLibrary.xml.
- Procedurally generated smoke textures
- 36 stages of aging per texture
- Dedicated particle pools for each exhaust pipe
- Reduced flickering and smoother transitions
- Compatible with base-game, DLC, and modded vehicles
- Supports multiple exhaust pipes
- No individual vehicle-specific configuration required
Changelog
- V1.9.0.2
New exhaust behavior: the smoke is calmer, rises softly, grows, and dissipates. There is significantly less smoke during normal operation, while full load and revving up make it heavy. - V1.9.0.2
NEW: Shop configuration “Exhaust Profile” for every vehicle with a diesel or methane engine, free, can also be changed in the workshop, multiplayer: Factory (Engine), Stage V Clean, Eco Tune, Common Rail Stock, Old School Turbo, Oldtimer Naturally Aspirated, Blue Smoker, Heavy Hauler, Stage 2 Black Smoke, Rolling Coal, Tractor Pulling. - V1.9.0.2
Shop preview: Select “Exhaust Profile” and the vehicle smokes as if you were driving uphill under load at full throttle. Pick another line or leave the shop, and the smoke turns off. - V1.9.0.2
NEW: Soot balls for old and heavily smoking engines: dense, bulging smoke balls with light-colored tops and dark undersides that thin out into a brownish gray. - V1.9.0.2
The three most extreme profiles are significantly denser and darker, and their clouds stick around for up to 20 s. - V1.9.0.2
A continuous smoke stream comes straight from the exhaust pipe: it begins exactly in front of the pipe opening, reaches a few centimeters farther out under load, matches the respective exhaust pipe’s diameter and angle when emitted, rises with the heat, and stays continuous while driving. - V1.9.0.2
Smoke size and buoyancy adapt to the diameter of every exhaust pipe, while multiple exhaust pipes share the exhaust fumes. - V1.9.0.2
Vehicles and players driving or walking through an exhaust cloud carry that smoke with them. - V1.9.0.2
Soot, oil, steam, and unburned fuel each get their own density, lifetime, size, and rising speed. Steam only shows up in cold air or rain. - V1.9.0.2
New mod icon. - V1.9.0.2
Better performance: at most 40 particles per second per pipe.
