A good automobile turbocharger water pipe needs the following conditions:

1. High temperature resistance: The water pipe of turbocharger needs to be able to withstand the working conditions in high temperature environment, so as to ensure that it will not be deformed or damaged due to high temperature when the turbocharger works.

2. Pressure resistance: The turbocharger water pipe needs to have sufficient pressure resistance to withstand the high-pressure water flow inside the turbocharger system to ensure that the water pipe will not burst or leak.

3. Corrosion resistance: The turbocharger water pipe needs to be made of corrosion-resistant materials, which can resist the corrosion of engine coolant or other chemicals and prolong the service life of the water pipe.

4. Sealing performance: The turbocharger water pipe needs to have good sealing performance to ensure that the joint between the water pipe and the turbocharger system will not leak and keep the system working normally.

5. Bending performance: The turbocharger water pipe usually needs to have a certain bending performance, which can adapt to the complex layout and tortuous installation position in the engine compartment of the vehicle and ensure that the water pipe can be correctly connected to the turbocharger system.

6. Convenient installation: The design of turbocharger water pipe should consider the convenience of installation, and can be quickly connected with other parts of turbocharger system to reduce installation time and cost.

To sum up, a good water pipe of automobile turbocharger needs to have the conditions of high temperature resistance, pressure resistance, corrosion resistance, good sealing performance, adaptive bending and convenient installation to ensure the normal operation and stable performance of turbocharger system.