Tomei TB403A-SB01C Turbocharger Upgrade

If you're looking to enhance the performance of your Subaru WRX or WRX STI from 1994 to 2007, the Tomei TB403A-SB01C is a turbocharger upgrade that promises to take your ride to the next level. This turbocharger is engineered for enthusiasts who demand precision and performance, making it a fantastic addition to your vehicle.

Multi Range Billet Actuator

The TB403A-SB01C features a large capacity multi-rate billet actuator, crafted from reinforced forged billet construction. This robust design ensures durability while providing up to six springs for fine boost adjustments. You can combine up to three springs to tailor the boost to your specific driving style, giving you the freedom to customize your setup. Plus, the swivel type nipple allows for flexible hose routing, making installation easier and cleaner.

Billet Compressor Wheel

One of the standout features of this turbocharger is its newly designed billet compressor wheel. Unlike traditional cast compressor wheels, this one is machined from aerospace-grade materials, ensuring high durability and a lightweight profile. The thinner blades and larger surface area significantly improve airflow and turbo spool, giving you quicker response times and better overall performance.

Specifications

• Model Compatibility: Subaru EJ20 Single Scroll, Subaru EJ25 Single Scroll
• Target Horsepower: 45 HP
• Bearing Type: Ball Bearing
• Initial Boost Setting: 1 Kgf/cm²
• Compressor Wheel:
  • Inducer Diameter: 54 mm
  • Exducer Diameter: 76 mm
  • Trim: 5
  • Blades: 6
  • Material: A261
  • Production: CNC Billet
• Turbine Wheel:
  • Exducer Diameter: 58 mm
  • Inducer Diameter: 67 mm
  • Trim: 7
  • Material: K41
  • Production: Cast
• Compressor Housing:
  • Inducer Diameter: 55 mm
  • Exducer Diameter: 41 mm
  • A/R: 0.78
• Turbine Housing:
  • Inducer Diameter: 45 mm
  • Exducer Diameter: E
  • A/R: 0.57

Installation Instructions

• For detailed installation instructions, CLICK HERE.

Fitment

• Subaru WRX EJ20 Single Scroll (1994-2007)
• Subaru WRX STI EJ20 Single Scroll (2001-2007)
• Subaru WRX EJ25 Single Scroll (2002-2007)
• Subaru WRX STI EJ25 Single Scroll (2001-2007)

Customer Feedback

Subaru WRX owners have reported significant gains in throttle response and overall performance after installing the TB403A-SB01C. One owner mentioned, "After putting this turbo on my 2006 WRX, I felt the boost kick in much faster, and the car pulls like a beast now!" This turbo upgrade is a must-have for anyone looking to maximize their Subaru's potential.