Frequently Asked Questions: External Wastegate Turbocharger How They Work

External wastegates are essential components in vehicle turbocharging systems, ensuring that the turbo operates correctly and efficiently. One of the most renowned brands in this sector is TiALSport, renowned for the reliability and high performance of their products, where ProtoXide has been a direct dealer for years. In this article, we will explore some of the most frequently asked questions regarding TiALSport wastegates and provide detailed answers to help you maximise your knowledge and use of wastegates.

1. Is my Wastegate an authentic TiALSport product?

If you purchased your Tial external wastegate from the official ProtoXide store, we can assure you that it is 100% authentic. However, when purchasing from third-party sources, there is a risk of getting a counterfeit product. To confirm authenticity, we recommend that you send a clear photo of the actuator with the serial number to ProtoXide via email for verification. Additionally, an up-to-date list of known counterfeit serial numbers can be found at tialsport.com/index.php/authenticity .

2. How do I decide which springs to use?

Spring pack selection should generally be based on control method selection, but generally, it is recommended to start with the lowest desired boost pressure, which can then be increased with an external controller. For the MVS and MVR series, spring packs are included; the F and V series have springs pre-installed to a specific value. Spring rating charts and color coding are available from ProtoXide if the wastegate was purchased from ProtoXide.

3. Why is my exhaust valve leaking air through the valve?

The exhaust valve must not leak air through the upper diaphragm chamber!

4. What is the best way to test a Wastegate?

We recommend testing the wastegate before installation and after each spring change to confirm proper reassembly. Use regulated, filtered air with an accurate pressure gauge attached to the lower actuator port. Slowly increase the pressure and monitor the valve opening, which should begin to open close to the nominal value of the spring pack. Do not exceed 2 bar during the test.

The nominal value of a single spring is a different value than the sum of the spring pack as it assumes a zero pressure valve during the bench test. This value will be slightly different when evaluating the spring pack due to the lack of back pressure zone.

5. How do I connect the Wastegate?

The wastegate connection depends on your control strategy. We have a detailed guide with available photos and diagrams that you will find inside the package sold only on ProtoXide. However, the principle remains the same for all external wastegates, except for the V60D model.

This depends entirely on your control strategy, but we have simplified instructions with
photos, posted on our website, at tialsport.com/documents/MV-Install-Guide.jpg
Although this diagram is specific to the MV series, the principle is the same for all exteriors.
Wastegate products except the V60D, which is designed for high pressure gas control.

6. Do I need to connect the water cooling ports?

Yes, connecting water cooling ports will significantly increase the life of your wastegate. If this option is not practical for your application, please contact ProtoXide staff for further advice.