EX38 38mm Wastegate

🔧 EX38 External Wastegate (38mm)

Compact High-Flow Turbo Boost Control Solution

MAXIMUM FLOW. MINIMUM SIZE. FULL CONTROL.

The EX38 External Wastegate is a compact, high-performance boost control solution designed for turbocharged applications where precise boost management and reliability are critical. Manufactured by Go Fast Bits, it combines motorsport-grade materials with a space-saving design.

⚙️ KEY FEATURES

• 38mm high-flow wastegate valve
• Supplied standard with 10psi spring
• Adjustable base boost range: 5psi to 22psi* (spring combinations)
• Ultra-compact 93mm overall height
• Tapered inlet for smooth exhaust flow transition
• Oversized seat I.D. for improved flow capacity
• Direct compatibility with TiAL MV-S flange systems

🚀 PERFORMANCE BENEFITS

🔥 Precise Boost Control
Maintains stable and repeatable boost levels across all conditions.

💨 High Exhaust Flow Capacity
Larger internal flow path reduces backpressure and improves turbo efficiency.

⚡ Faster Turbo Response
Efficient gas flow helps the turbo spool quicker and more consistently.

🔒 Stable High-Boost Operation
Designed to handle aggressive boost setups without control drift.

🧠 ENGINEERING DESIGN

The EX38 is built for performance environments where durability and precision matter:

• Investment-cast 253MA stainless steel body
• CNC-machined stainless steel valve and seat
• Billet 6061 aluminium actuator housing
• Nomex-reinforced silicone diaphragm
• Internal heat-shield shroud to prevent sticking and heat damage
• Full stainless steel hardware throughout

🏁 WHY IT PERFORMS BETTER

Unlike bulkier traditional wastegates, the EX38 focuses on:

• Reduced physical size for tight engine bays
• Improved flow efficiency despite compact design
• Stronger thermal resistance under extreme exhaust heat
• More consistent boost control under high load

🔩 SPECIFICATIONS

• Valve Size: 38mm
• Height: 93mm
• Material: 253MA stainless steel / billet aluminium
• Mounting: V-band clamp system
• Spring Options: 5psi, 7psi, 10psi (combinations available)
• Boost Range: 5psi – 22psi*

🚗 APPLICATION USE

• Turbocharged performance street builds
• High-boost track applications
• Engine bays with limited space
• Custom turbo kit installations
• TiAL flange-compatible setups

💡 WHY CHOOSE THE EX38?
Because it delivers big wastegate performance in a compact body, giving you accurate boost control, strong durability, and efficient flow without taking up unnecessary space.