External wastegate V-Band GFB EX38

The GFB (Go Fast Bits) EX38 wastegate is a compact, high-performance external wastegate designed for demanding turbo applications.

Precise boost pressure control: Different spring combinations allow boost pressure to be adjusted to meet specific engine needs.
Compact design and high performance: Despite its small size, the EX38 wastegate offers high flow, thus optimizing exhaust gas management.
Durability and reliability in extreme environments: Quality materials and reinforced design ensure consistent performance, even under high-pressure and high-temperature conditions.
Ease of Installation: The V-Band mounting system simplifies installation and maintenance.
Improved Compatibility: The ability to mount this wastegate on TiAl MV-S flanges makes it compatible with a wide range of turbo systems

38mm Valve: This valve size allows for efficient flow of exhaust gases while optimizing boost pressure management.
The inner diameter of the valve seat is larger than other wastegates in the same category, which improves flow.

Interchangeable Spring Systems: The EX38 valve comes standard with a 10 psi spring, but allows the use of additional springs (5 psi, 7 psi and 10 psi) to adjust the base boost pressure.

Possible spring combinations allow basic pressures ranging from 5 psi to 22 psi to be achieved:

5 psi = 0.34 bar
7 psi = 0.48 bar
10 psi = 0.69 bar
12 psi = 0.83 bar
15 psi = 1.03 bar
17 psi = 1.17 bar
22 psi = 1.52 bar

Compact Design: At just 93mm tall, the EX38 is shorter than its rivals while delivering equal or even greater throughput.
This compact design allows installation in tight spaces without compromising performance.

Compatibility with TiAl MV-S flanges: The EX38 is directly compatible with TiAl MV-S flanges, making it an ideal solution for turbo kits using TiAl wastegates, while also providing a performance improvement.

High-quality materials: The valve body is made of 253MA chrome-nickel stainless steel, a high-temperature and corrosion-resistant material, ensuring durability under harsh conditions.
The valve is CNC machined from stainless steel for maximum precision.
The diaphragm is made of Nomex-reinforced silicone, providing exceptional resistance to high temperatures.

Heat Shielding: The internal shroud protects the valve stem from excessive heat, reducing carbon buildup and preventing valve sticking. This ensures reliability and consistent performance, even in high boost environments.

V-Band Mounting System: The V-Band mounting system ensures easy and secure installation, with high mechanical strength and reduced risk of leakage.

Aluminum Actuator Housing: CNC machined from 6061 aluminum, the housing is both lightweight and strong, able to withstand high temperatures while providing convenient installation.

Made in Australia under ISO 9001: Production under ISO 9001 ensures consistent quality and rigorous manufacturing processes.

GFB's EX38 wastegate combines a compact, lightweight design with durable materials and optimized performance. Whether you're looking to improve exhaust flow, adjust boost pressure, or install a wastegate in a tight space, the EX38 is a reliable, high-performance solution.