Kinugawa Turbo Dual Port Adjustable Internal Wastegate Actuator — Mitsubishi Lancer EVO 9 IX 4G63T

The Kinugawa Dual Port Adjustable Internal Wastegate Actuator is a direct-fit, bolt-on upgrade engineered specifically for Mitsubishi Lancer EVO 9 (IX) 4G63T applications running Kinugawa or Mitsubishi TD05HR and TD06SL2R upgraded turbochargers. The factory actuator's weak spring allows the wastegate to open prematurely under boost, robbing mid-range torque and limiting peak power. This dual port actuator replaces it with a precision-adjustable, spring-swappable unit that holds the wastegate closed longer — delivering faster spool, sharper throttle response, and sustained peak boost.

Available in spring pressure ratings from 0.3 bar (4.41 psi) to 2.0 bar (30 psi), with an optional full spring set (8 springs) for maximum tunability. Select your target boost pressure from the variant selector above.

Compatible Applications

• Mitsubishi Lancer Evolution 9 (EVO IX) — 4G63T engine
• Kinugawa TD05HR upgraded turbocharger
• Kinugawa TD06SL2R upgraded turbocharger
• Dual-port type only

Single Port vs. Dual Port — What's the Difference?

Single Port Actuators
Boost reference is supplied to one side of the diaphragm. The wastegate opens in one direction; spring pressure alone handles the return stroke and holds the wastegate closed. Best suited for basic boost control via a manual boost controller (MBC) or electronic boost controller (EBC). Simple plumbing, straightforward setup — ideal for street and mild performance builds.

Dual Port Actuators
Boost reference is supplied to both sides of the diaphragm, enabling bidirectional control of the wastegate — both opening and closing. Spring pressure is pneumatically assisted on the return stroke, allowing a softer spring to achieve the same or higher boost targets with greater precision. Recommended for high-boost applications, high exhaust backpressure environments, or oversized wastegates. Best used with an EBC for maximum tunability.

Spring Pressure Setup & Preload Reference

Full-stroke displacement is 14.5 mm. The default preload is set to 2 nut turns (1.5 mm stroke displacement). You can adjust the preload stroke using the spring pressure tables below. To achieve higher boost, preload the actuator rod end as shown in the step-by-step guide.

Watch the video below to learn how to replace the spring on the adjustable actuator.

Step 1: Preload the Actuator Rod for Higher Boost

You can preload the actuator rod to achieve a higher boost pressure than the installed spring rating. Follow the steps in the video below.

Kit Contents

• 1 × Kinugawa Dual Port Adjustable Wastegate Actuator with bracket and rod
• 1 × Spring (single pressure) or full spring set (8 springs) — depending on variant selected

Product Details

• Brand: Kinugawa Turbo Systems
• Condition: Brand New
• Port Type: Dual Port
• Pressure Range: 0.3 bar / 4.41 psi — 2.0 bar / 30 psi (select variant)
• Full-Stroke Displacement: 14.5 mm
• Default Preload: 2 nut turns / 1.5 mm stroke displacement
• Country of Origin: Taiwan
• HS Code: 841199
• Weight: 1 kg