Kinugawa Turbo Dual Port Adjustable Internal Wastegate Actuator — Universal Fit with 6 Springs & 4 Rods
The Kinugawa Dual Port Adjustable Internal Wastegate Actuator is a universal, bolt-on internal wastegate upgrade for turbocharged performance builds that demand precise, repeatable boost control. The factory actuator’s weak diaphragm spring allows the wastegate to blow open prematurely under high boost — robbing mid-range torque and capping peak power. Kinugawa’s dual port design holds the wastegate closed longer, delivering quicker spool, sharper throttle response, and sustained peak boost for superior acceleration and mid-range pulling power.
This kit ships with a 1.0 bar (14.7 psi) spring pre-fitted on the actuator head, plus a full set of 6 additional springs and 4 straight rods in four lengths — giving you everything needed to dial in the exact boost pressure and rod geometry for your specific turbo application.
Compatible Application
- Universal fit — compatible with internal wastegate turbochargers across multiple platforms
- Dual port type; can also be run as single port (leave lower port vented to atmosphere)
- Suitable for street, track, and towing/pulling builds
Key Performance Benefits
- Holds the wastegate valve seated longer — higher peak boost achieved sooner
- Produces strong torque from idle through the full RPM range
- Crisp, controlled boost response — eliminates boost creep and mid-range sag
- Bidirectional diaphragm control for more precise boost management vs. single port
- Multiple rod lengths and spring pressures included for universal fitment flexibility
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.
Tech Tip: Dual port actuators can also be run as a traditional single port — simply leave the lower actuator port vented to atmosphere.
Spring Pressure Options & Setup Reference
Six spring pressure options are included: 0.5 bar, 0.8 bar, 1.0 bar, 1.2 bar, 1.5 bar, and 1.7 bar. The 1.0 bar spring is pre-fitted on the actuator head. Use the spring pressure tables below to identify the correct spring for your target boost level and to set the appropriate preload. Spring surface paint is used for color identification only — it does not affect spring function or performance.
How to replace the actuator spring and hold boost pressure →
Rod Specifications
- Rod lengths included: 130 mm, 150 mm, 165 mm, and 180 mm
- End fitting hole diameter: 6.2 mm
Installation & Preload Guide
Watch the video below for a complete walkthrough on installing the actuator, setting rod preload, and achieving your target boost pressure.
Kit Contents
- 1 × Kinugawa Dual Port Adjustable Wastegate Actuator (1.0 bar / 14.7 psi spring pre-fitted)
- 6 × Springs (0.5, 0.8, 1.0, 1.2, 1.5, 1.7 bar)
- 4 × Straight rods (130 mm, 150 mm, 165 mm, 180 mm)
- 1 × End fitting (hole diameter: 6.2 mm)
- 2 × Nuts for bracket connection
- 1 × Nut for rod
Product Details
- Brand: Kinugawa Turbo Systems
- Condition: Brand New
- Port Type: Dual Port (universal)
- Default Spring: 1.0 bar / 14.7 psi (pre-fitted)
- Spring Range: 0.5 bar – 1.7 bar
- Rod Lengths: 130 mm, 150 mm, 165 mm, 180 mm
- End Fitting Hole Diameter: 6.2 mm
- Country of Origin: Taiwan
- HS Code: 841199
- Weight: 1 kg