Forced Induction

Turbocharger and supercharger simulation. Increases engine power via compressed intake air.

Types

Turbocharger

Exhaust-driven, has lag (spool time). More efficient, power builds with RPM.

Supercharger

Belt-driven, instant response, no lag. Linear power delivery, slight parasitic loss.

Configuration

Type

  • None (naturally aspirated)
  • Turbocharger
  • Supercharger

Max Boost

Boost pressure in bar:

  • Street turbo: 0.5-1.0 bar
  • Performance turbo: 1.0-1.5 bar
  • Race turbo: 1.5-2.5 bar
  • Supercharger: 0.3-0.8 bar

Power Gain

Multiplies engine power output when boost is active. Higher values = more power increase at max boost. Typical values:

  • 1.0 = disabled
  • 1.3-1.5 = street performance
  • 1.6-2.0 = race/track

Spool Time (Turbo Only)

Time to reach max boost:

  • 0.3-0.8s: Small turbo (responsive)
  • 0.8-1.5s: Medium turbo
  • 1.5-3.0s: Large turbo (laggy, big power)

Boost Threshold RPM

Min RPM for boost to build:

  • Low (1500-2500): Early boost
  • Medium (2500-3500): Balanced
  • High (3500-5000): Peaky

Sound Integration

Works with:

  • Turbo Whistle Component: Spool sound
  • Turbo Flutter Component: Compressor surge on lift
  • Exhaust Pop Component: More frequent with turbos

Example Setups

Street Turbo Sport Car

  • Type: Turbocharger
  • Max Boost: 1.0 bar
  • Power Gain: 1.5×
  • Spool: 1.0s
  • Threshold: 2800 RPM

Supercharged Muscle Car

  • Type: Supercharger
  • Max Boost: 0.6 bar
  • Power Gain: 1.4×
  • Threshold: 1800 RPM

Big Turbo Track

  • Type: Turbocharger
  • Max Boost: 2.0 bar
  • Power Gain: 1.9×
  • Spool: 2.2s
  • Threshold: 3500 RPM

Troubleshooting

No boost: Check RPM > threshold, throttle applied, Power Gain > 1.0, Max Boost > 0

No lag (turbo): Increase spool time, verify Type = Turbocharger

Too laggy: Decrease spool time, lower threshold RPM

Insufficient power: Increase Power Gain, increase Max Boost, check base power curve