Overview

The Tomioka Racing TR-TM1004 Sigma Turbo is a bolt-on turbo upgrade engineered for the Mitsubishi Lancer Evolution X (4B11T). It’s built for enthusiasts who want a stronger mid-to-top-end powerband, higher airflow capacity, and boost stability—without the complexity of custom fabrication.

Why Upgrade to the Sigma Turbo (TR-TM1004)

• 100% bolt-on fitment for the Evo X turbo location and factory-style install
• 3” inlet supports increased airflow and power headroom
• Ported & polished turbine housing improves exhaust flow efficiency
• 1.5 bar / 21 psi actuator for strong boost control on performance tunes
• Mid-to-high powerband focus for street pulls and track use

Power Notes 

The “up to ~550HP” figure is power potential, not a guarantee. Final output depends heavily on supporting mods (fueling, intercooler, intake, exhaust), fuel quality (pump vs ethanol blends), tuning strategy, and overall engine condition. A proper tune is required.

Turbo Specifications

• Bearing Type: Journal
• Compressor Wheel: 61.4mm inducer / 82mm exducer
• Turbine Wheel: 67.1mm inducer / 58.8mm exducer
• Actuator: 1.5 bar / 21 psi
• Turbine Housing: 12cm²
• Power Potential: Up to ~550HP (with supporting mods & tuning)

Fitment

• Vehicle: Mitsubishi Lancer Evolution X
• Engine: 4B11T

If you’re unsure about compatibility with your specific year/trim, message us before ordering.

What’s Included

• Turbocharger assembly
• Wastegate actuator
• Oil pipe
• Water pipe
• Gasket(s) (varies by batch/listing)

Recommended Supporting Mods

• Professional ECU tune (required)
• High-flow intake / turbo inlet solution compatible with 3” inlet
• Upgraded intercooler + charge piping (to control IATs)
• Fuel system upgrades if targeting higher boost / higher power
• Free-flow downpipe & exhaust

Use Case

Ideal for Evo X owners building a responsive street car with serious top-end power capability, or a track-focused setup needing reliable airflow and boost control.

Specs Table

Part Number: TR-TM1004
Application: Mitsubishi Lancer Evolution X (4B11T)
Bearing: Journal
Compressor Wheel: 61.4mm / 82mm
Turbine Wheel: 67.1mm / 58.8mm
Actuator: 1.5 bar / 21 psi
Turbine Housing: 12cm²
Power Potential: Up to ~550HP (supporting mods + tune required)

FAQs

Q: Is this turbo truly bolt-on for Evo X?
A: Yes—TR-TM1004 is designed as a bolt-on upgrade in the factory turbo location. You still need proper install steps, leak checks, and tuning.

Q: Do I need a tune?
A: 100% yes. Do not install and drive hard without tuning.

Q: What does “up to ~550HP” mean?
A: That’s the turbo’s potential with the right supporting mods (fueling, intercooler, intake/exhaust) and an aggressive, safe tune. Your results will vary.

Q: What supporting mods do you recommend first?
A: Tune + intercooler + intake/inlet + fueling (if you’re pushing power) + downpipe/exhaust.

Q: Journal bearing vs ball bearing—should I worry?
A: Journal bearing is proven and cost-effective. What matters most is correct oil supply/return, heat management, and tuning.