Tactrix 3-Port Boost Control Solenoid for Mitsubishi

The Tactrix 3-Port Boost Control Solenoid (BCS) is an aftermarket electronic valve used to control turbo boost pressure more precisely on Mitsubishi (especially Evo) and Subaru turbo engines.

 What it does

It replaces the factory 2-port or OEM boost solenoid and allows your ECU/tuner to:

• Control wastegate duty cycle more accurately
• Achieve higher and more stable boost levels
• Reduce boost creep or unstable boost at higher power
  

  Important

  • It must be tuned properly (ECU map changes required)
  • Not safe to install and drive aggressively on a stock tune
  • Incorrect plumbing or tuning can cause overboost or engine damage