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Product Details
The Turbosmart GenV CompGate40 CG External Wastegate (TS-0552-1202) is a high-performance 40mm external wastegate specifically engineered for advanced compressed-gas and CO₂ boost control systems. Featuring a 5 PSI preinstalled spring configuration, black actuator housing, and specialized inverted diaphragm, the CompGate40 CG delivers exceptional boost control flexibility for demanding turbocharged street, drag racing, rally, and motorsport applications.
Unlike conventional external wastegates, which typically rely on turbocharger boost pressure and mechanical spring resistance to regulate exhaust flow, the GenV CompGate40 CG is designed to accommodate significantly higher pressure differentials between its upper and lower actuator chambers.
This capability makes it particularly valuable for competition vehicles utilizing regulated CO₂ or compressed-air systems to control wastegate operation.
In traditional pneumatic wastegate configurations, achievable boost pressure may be limited by the mechanical spring pressure and the boost controller's ability to manipulate the actuator pressure signal. Turbosmart's compressed-gas design expands this operating range by allowing additional pressure to be applied to the actuator's upper chamber.
The result is a wastegate capable of supporting a much wider range of boost control strategies when paired with appropriately configured pressure regulators, solenoids, and engine management equipment.
At the center of the CompGate40 CG is Turbosmart's inverted high-pressure diaphragm, designed to withstand the increased pressure and differential loads associated with compressed-gas boost control.
The wastegate also incorporates a high-temperature 347 stainless steel body, Nitronic 60 valve guide, 17-7 PH stainless steel springs, and a stainless steel valve seat, providing durability in demanding turbocharger environments.
Turbosmart's GenV platform features a modular actuator design with a clockable upper and lower housing, allowing the pressure reference ports to be positioned for improved hose routing and engine bay clearance.
Its compact 40mm valve configuration and V-band mounting system make the CompGate40 CG suitable for many custom turbocharger installations where space is limited but precise boost management remains essential.
The TS-0552-1202 is supplied with a 5 PSI mechanical base spring configuration, providing a relatively low starting pressure for advanced boost control strategies.
Additional springs are included to support alternative manufacturer-approved configurations.
For Honda and Acura enthusiasts, the CompGate40 CG is particularly relevant to turbocharged K20, K24, B16, B18, and B20 builds utilizing advanced boost management systems.
Whether assembling a dedicated drag racing vehicle, upgrading a custom turbocharger installation, or implementing CO₂-assisted boost control, the Turbosmart GenV CompGate40 CG TS-0552-1202 delivers the precision engineering, configurability, and durability expected from Turbosmart.
Features
Genuine Turbosmart GenV CompGate40 CG: Designed specifically for compressed-gas and CO₂ boost control applications.
40mm External Wastegate Valve: Provides effective exhaust gas bypass control for compatible turbocharger systems.
5 PSI Preinstalled Spring: Supplied with a nominal 5 PSI mechanical base boost configuration.
Black Actuator Housing: Provides a clean, performance-oriented appearance.
Compressed-Gas Compatible Design: Engineered for systems using regulated CO₂ or compressed air.
Specialized Inverted Diaphragm: Designed to withstand high actuator pressure differentials.
Expanded Boost Control Range: Supports advanced boost management strategies beyond typical spring-only configurations.
347 Stainless Steel Wastegate Body: Provides excellent high-temperature durability.
Nitronic 60 Valve Guide: Designed for reliable valve movement in demanding exhaust environments.
17-7 PH Stainless Steel Springs: Provides durable spring construction.
Stainless Steel Valve Seat: Supports reliable sealing and wastegate operation.
CFD-Optimized Flow Design: Developed using computational fluid dynamics and validated through testing.
Improved Thermal Performance: GenV construction is engineered to manage high exhaust temperatures.
Enhanced Fatigue Resistance: Designed for demanding motorsport operating conditions.
Modular Actuator Construction: Supports serviceability and configuration changes.
360-Degree Clockable Actuator: Allows flexible positioning of pressure reference connections.
1/8-Inch NPT Reference Ports: Supports compatible boost control plumbing.
V-Band Inlet and Outlet Connections: Provides secure mounting and convenient servicing.
Strap-Style V-Band Clamps: Designed for secure flange connections.
Optional Liquid Actuator Cooling: Supports additional thermal management when equipped with the appropriate components.
Optional Wastegate Position Sensor: Allows compatible position monitoring upgrades.
Locking Collar Design: Supports compact packaging and simplified actuator servicing.
Additional Springs Included: Allows approved alternative mechanical base pressure configurations.
Drag Racing Applications: Designed for advanced CO₂-controlled turbocharger systems.
Rally and Motorsport Applications: Supports demanding compressed-air boost control strategies.
Universal Turbocharger Application: Suitable for compatible custom external wastegate installations.
Turbosmart Part Number TS-0552-1202: Ensures accurate product identification.
Additional Information
- Manufacturer: Turbosmart
- Part Number: TS-0552-1202
- Product Series: GenV CompGate40 CG
- Product Type: External Turbocharger Wastegate
- Wastegate Configuration: Compressed Gas / CO₂
- Wastegate Valve Diameter: 40mm
- Preinstalled Spring Pressure: 5 PSI
- Actuator Housing Color: Black
- Wastegate Body Material: High-Temperature 347 Stainless Steel
- Valve Guide Material: Nitronic 60
- Spring Material: 17-7 PH Stainless Steel
- Valve Seat Material: Stainless Steel
- Diaphragm Configuration: Inverted High-Pressure Diaphragm
- Pressure Reference Ports: 1/8-Inch NPT
- Inlet Connection: V-Band
- Outlet Connection: V-Band
- Actuator Configuration: Clockable / Rotatable
- Optional Actuator Cooling: Liquid Cooling Compatible
- Optional Position Monitoring: Compatible Position Sensor Upgrade
- Vehicle Fitment: Universal Custom Turbocharger Applications
- UPC: 9329677018707
GenV CompGate40 CG Compressed-Gas Design
The GenV CompGate40 CG is specifically engineered for boost control systems that use regulated compressed gas to influence wastegate operation.
In a conventional wastegate arrangement, boost pressure acts against the internal spring to open the wastegate valve.
In a compressed-gas system, additional pressure can be applied to the actuator's upper chamber to provide greater closing force.
This allows the boost control system to manage wastegate operation across a wider range of operating conditions.
The result is greater flexibility for advanced boost strategies, particularly in motorsport applications.
40mm External Wastegate Valve
The CompGate40 CG utilizes a 40mm valve to regulate exhaust gas bypass flow.
When the wastegate opens, exhaust gas is diverted around the turbocharger turbine, helping regulate turbine speed and boost pressure.
The 40mm configuration provides a compact option for custom turbocharger installations.
However, wastegate sizing must be matched to the engine's exhaust flow, turbocharger characteristics, and intended boost pressure.
A larger wastegate may be required for applications with greater exhaust bypass demands.
5 PSI Preinstalled Spring
The TS-0552-1202 comes equipped with a 5 PSI mechanical base spring configuration.
This provides a relatively low nominal mechanical opening pressure when operated under suitable reference conditions.
The low spring pressure can be useful in applications requiring a wide boost adjustment range.
When used with an appropriately configured compressed-gas system, additional actuator pressure can provide greater wastegate closing force.
The 5 PSI spring rating does not represent the maximum boost pressure capability of the complete system.
Actual achievable boost pressure depends on the turbocharger, engine, wastegate plumbing, actuator pressure, and boost control calibration.
High-Pressure Inverted Diaphragm
One of the most important differences between the CompGate40 CG and standard CompGate40 is the specialized inverted diaphragm.
The CG diaphragm is designed to accommodate increased pressure differentials between the actuator chambers.
This is especially important in CO₂ boost control systems, where regulated gas pressure may be applied to the upper chamber.
The inverted diaphragm design supports reliable operation under conditions that may exceed the intended pressure differential of a conventional wastegate diaphragm.
Compressed-Gas Boost Control
CO₂-assisted boost control is commonly used in drag racing and other motorsport applications.
A typical system may include:
A compressed-gas supply.
A suitable pressure regulator.
Pressure-rated hoses and fittings.
Electronic boost control solenoids.
An engine management system or dedicated boost controller.
Appropriate pressure monitoring and safety equipment.
The wastegate responds to the pressure differential established by the control system.
The TS-0552-1202 provides the wastegate assembly but does not include the external CO₂ supply or boost control hardware.
Wide Boost Control Range
The CompGate40 CG is designed for applications requiring a large boost adjustment window.
By using regulated pressure to bias the actuator's upper chamber, the system can provide substantially greater closing force than the spring alone.
This can be useful when a vehicle requires different boost pressure targets for launch, traction management, gear changes, or other operating conditions.
The final control range depends on the complete turbocharger and boost control configuration.
High-Temperature 347 Stainless Steel Body
The GenV CompGate40 CG features a body manufactured from high-temperature 347 stainless steel.
This material is selected for its performance in demanding exhaust environments.
External wastegates experience significant thermal cycling and high exhaust temperatures during operation.
The stainless steel construction helps provide durability and resistance to these conditions.
Nitronic 60 Valve Guide
The CompGate40 CG incorporates a Nitronic 60 valve guide.
Nitronic 60 is a stainless steel alloy recognized for its resistance to galling and wear.
These characteristics make it suitable for components exposed to repeated movement and elevated temperatures.
The valve guide helps maintain proper valve alignment throughout wastegate operation.
17-7 PH Stainless Steel Springs
The GenV CompGate40 CG uses 17-7 PH stainless steel springs.
This precipitation-hardening stainless steel is commonly used in applications requiring high strength and good fatigue resistance.
Proper spring selection is important for establishing the mechanical base pressure.
Turbosmart supplies additional spring options with the wastegate to support approved configurations.
CFD-Optimized Exhaust Flow
Turbosmart developed the GenV wastegate platform using computational fluid dynamics and physical testing.
The internal geometry is designed to improve exhaust gas flow through the wastegate.
Efficient bypass flow is important for maintaining stable boost pressure, particularly when the engine produces substantial exhaust flow.
Wastegate placement and manifold design remain critical factors in overall performance.
360-Degree Clockable Actuator
The GenV CompGate40 CG features a rotatable actuator arrangement.
The actuator cap and base can be positioned to improve access to pressure reference ports and simplify hose routing.
This is especially useful in compact engine bays where turbocharger plumbing and exhaust components compete for limited space.
Proper actuator positioning can also help keep pressure hoses away from excessive heat.
V-Band Inlet and Outlet Connections
The wastegate uses V-band mounting connections on both the inlet and outlet.
V-band clamps provide secure connections while allowing the wastegate to be removed for servicing.
The included weld flanges allow the wastegate to be integrated into compatible custom exhaust manifolds and dump tubes.
Correct flange alignment and proper welding procedures are essential for a reliable installation.
Optional Liquid Actuator Cooling
The GenV platform supports optional liquid actuator cooling.
This feature can help manage actuator temperatures in demanding turbocharger installations.
Liquid cooling may be beneficial in applications with high exhaust temperatures, limited airflow, or extended periods of heavy engine load.
The required cooling components and plumbing must be installed according to Turbosmart's instructions.
Optional Wastegate Position Sensor
The CompGate40 CG can be equipped with an optional wastegate position sensor upgrade.
A position sensor can provide additional information about wastegate valve movement.
This may be useful for advanced engine management, data acquisition, and boost control diagnostics.
The position sensor is sold separately.
GenV vs. Gen4 CompGate40
The GenV CompGate40 incorporates several improvements over the earlier Gen4 design.
These include:
Updated exhaust flow geometry.
Improved thermal management.
Modular actuator construction.
Clockable actuator positioning.
Optional liquid cooling.
Optional wastegate position monitoring.
Updated V-band mounting components.
Turbosmart designed the GenV range to provide a direct-fit upgrade path for corresponding Gen4 wastegate mounting arrangements.
However, individual internal service components should not be assumed interchangeable between generations.
Standard CompGate40 vs. CompGate40 CG
The standard GenV CompGate40 is intended for conventional pneumatic boost control applications.
The CompGate40 CG is specifically designed for compressed-gas systems requiring larger actuator pressure differentials.
The CG model uses a specialized inverted diaphragm and is intended for advanced boost control strategies.
These configurations should not be treated as interchangeable without verifying the appropriate components and operating requirements.
Compressed-Gas System Safety
Compressed-gas boost control systems must be designed and installed correctly.
Excessive actuator pressure, incorrect regulator settings, or improper plumbing can cause unpredictable wastegate operation.
All gas supply components should be rated for the intended operating pressures.
Never connect an unregulated high-pressure CO₂ cylinder directly to the wastegate.
Professional installation and tuning are strongly recommended.
Common Reasons for Replacement
Upgrading to CO₂ Boost Control: Provides a wastegate designed for compressed-gas pressure management.
Advanced Drag Racing Builds: Supports wide-range boost control strategies.
Replacing a Standard Wastegate: Offers a specialized CG configuration for compatible applications.
Inconsistent Boost Control: Replaces a wastegate that has been diagnosed as defective.
Damaged Wastegate Diaphragm: Provides a complete replacement assembly when necessary.
Turbocharger Upgrades: Supports revised boost management requirements.
High-Horsepower Engine Builds: Suitable for properly engineered performance turbocharger systems.
Electronic Boost Controller Upgrades: Supports advanced boost management equipment.
Custom Turbo Manifold Installation: Provides a 40mm external wastegate for compatible manifolds.
Motorsport Engine Rebuilds: Supports updated turbocharger and boost control configurations.
Wastegate Service or Replacement: Replaces an aging or damaged external wastegate.
Competition Boost Management: Supports specialized compressed-gas control strategies.
Installation Notes
Verify Application Requirements: Confirm that a 40mm compressed-gas external wastegate is appropriate for the turbocharger system.
Confirm Wastegate Type: Verify that the application requires the CG/CO₂ version rather than a standard pneumatic wastegate.
Review Turbosmart Instructions: Read the current GenV CompGate40 CG installation documentation.
Allow the Engine to Cool: Never service turbocharger or exhaust components while hot.
Plan Wastegate Placement: Position the wastegate to allow efficient exhaust gas bypass flow.
Verify Flange Compatibility: Confirm the V-band mounting arrangement.
Prepare the Weld Flanges: Ensure proper alignment before fabrication.
Fabricate the Wastegate Inlet: Use appropriate exhaust tubing and welding procedures.
Install the Outlet Plumbing: Route the dump tube or recirculation piping according to the application.
Avoid Exhaust Restrictions: Ensure the wastegate outlet provides adequate flow.
Check Engine Bay Clearance: Maintain suitable clearance from wiring, hoses, and heat-sensitive components.
Install Heat Protection: Use appropriate shielding where necessary.
Install the Valve Seat: Follow Turbosmart's recommended installation procedure.
Position the Wastegate: Align the assembly with the inlet and outlet connections.
Secure the V-Band Clamps: Follow the manufacturer's installation instructions.
Verify the Installed Spring: Confirm that the 5 PSI configuration matches the intended mechanical base pressure.
Select Approved Spring Combinations: Use only Turbosmart-recommended configurations.
Clock the Actuator: Position the housing to allow safe pressure line routing.
Install Pressure Reference Fittings: Use the correct 1/8-inch NPT fittings.
Seal Unused Pressure Ports: Install the appropriate blanking plugs.
Install the Compressed-Gas Supply: Use a suitable regulator and pressure-rated plumbing.
Verify Regulated Gas Pressure: Never expose the actuator to uncontrolled cylinder pressure.
Connect Boost Control Solenoids: Follow the boost controller manufacturer's recommended plumbing arrangement.
Inspect All Pressure Connections: Check for leaks and secure hose routing.
Perform a Controlled Pressure Test: Verify wastegate actuator response using regulated pressure.
Check for Exhaust Leaks: Inspect the wastegate inlet and outlet connections.
Verify Mechanical Base Pressure: Confirm the expected wastegate response before applying additional actuator pressure.
Configure the Boost Controller: Establish appropriate pressure targets and safety limits.
Review Engine Management Calibration: Ensure the ECU is configured for the turbocharger and boost control system.
Perform Initial Low-Boost Testing: Monitor boost pressure carefully before full-load operation.
Verify Boost Stability: Check for unexpected boost spikes, creep, or inconsistent control.
Inspect Compressed-Gas System Operation: Verify regulator, solenoid, and pressure line performance.
Reinspect After Initial Operation: Check mounting hardware, V-band clamps, and pressure connections.
Important: Compressed-gas boost control systems can generate substantial actuator forces. Incorrect plumbing or regulator settings may cause uncontrolled boost pressure and engine damage. Professional installation and tuning are recommended.
What's Included
(1) Turbosmart GenV CompGate40 CG 40mm External Wastegate – Black (TS-0552-1202)
(1) Preinstalled 5 PSI Spring Configuration
Additional GenV CompGate40 Spring Options
(1) Stainless Steel Wastegate Valve Seat
(1) Inlet Weld Flange
(1) Outlet Weld Flange
V-Band Clamps for Inlet and Outlet
Pressure Reference Hose Tail Fittings
Pressure Port Blanking Plugs
Mounting Hardware
Locking Collar Service Tool
(1) Turbosmart Decal
Note: The complete compressed-gas supply system, CO₂ cylinder, pressure regulator, boost control solenoids, electronic boost controller, custom exhaust piping, and optional position sensor are not included.
Take your turbocharger boost management to the next level with the Turbosmart GenV CompGate40 CG 40mm External Wastegate (TS-0552-1202), engineered specifically for demanding compressed-gas and CO₂ boost control applications.
Featuring a 40mm stainless steel wastegate valve assembly, 5 PSI preinstalled spring, high-pressure inverted diaphragm, 347 stainless steel body, Nitronic 60 valve guide, and modular GenV actuator design, the CompGate40 CG delivers the durability, flexibility, and precise operation required for advanced motorsport turbocharger systems.
Whether building a turbocharged Honda K20/K24, preparing a dedicated drag racing vehicle, or upgrading to a sophisticated CO₂-assisted boost control strategy, the Turbosmart TS-0552-1202 provides the engineering and performance-focused design needed for reliable external wastegate operation.
| Part Number: | TS-0552-1202 |
| Brand: | Turbosmart |
| Spring Pressure: | 5 psi |
| Wastegate Size: | 40mm |
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
This part does not have vehicle specific fitment. Please contact us if you need assistance.
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