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The SR20DET engine is a popular choice among car enthusiasts, especially for those looking to enhance performance through turbo upgrades. One of the favored upgrades is the Mitsu TD06-20G turbo. However, while this turbo can significantly improve power output, it can also bring about several common issues. Understanding these problems and their solutions is crucial for a successful upgrade.
Common Issues When Upgrading to the Mitsu TD06-20G
Upgrading to the Mitsu TD06-20G can lead to various challenges. Here are some of the most common issues that users may encounter:
- Boost Control Problems
- Oil Supply and Drain Issues
- Inadequate Fuel Supply
- Intercooler and Piping Compatibility
- Wastegate Actuation Problems
1. Boost Control Problems
One of the first issues that may arise is related to boost control. The TD06-20G can produce higher boost levels than the stock turbo, leading to potential overboost situations.
Symptoms
Symptoms of boost control problems include:
- Boost gauge readings exceeding safe levels
- Engine knocking or pinging
- Loss of power or inconsistent acceleration
Solutions
To address boost control issues, consider the following solutions:
- Install an aftermarket boost controller to manage boost levels effectively.
- Ensure the wastegate is functioning correctly and is properly sized for the turbo.
- Check for leaks in the boost piping and connections.
2. Oil Supply and Drain Issues
Another common issue when upgrading to the TD06-20G is related to oil supply and drainage. Insufficient oil flow can lead to turbo failure.
Symptoms
Look for these signs of oil supply issues:
- Turbo whistling or whining noises
- Excessive smoke from the exhaust
- Turbo failure or damage
Solutions
To solve oil supply and drain issues:
- Ensure that the oil feed line is of the correct size and is not kinked or blocked.
- Verify that the oil drain line is installed at the proper angle to facilitate drainage.
- Consider upgrading to a larger oil feed line if necessary.
3. Inadequate Fuel Supply
When upgrading to a larger turbo like the TD06-20G, the engine may require more fuel than the stock system can provide.
Symptoms
Signs of inadequate fuel supply include:
- Engine stalling or hesitation during acceleration
- Rich or lean air-fuel mixture readings
- Decreased power output
Solutions
To ensure adequate fuel supply:
- Upgrade the fuel pump to a higher flow rate model.
- Install larger fuel injectors to meet the increased demand.
- Consider remapping the ECU to optimize fuel delivery.
4. Intercooler and Piping Compatibility
The TD06-20G may require different intercooler setups and piping compared to stock turbos, which can lead to compatibility issues.
Symptoms
Look for the following signs:
- Boost leaks from improperly fitted pipes
- Overheating due to inadequate intercooling
- Reduced performance and efficiency
Solutions
To resolve intercooler and piping issues:
- Choose an intercooler designed to handle higher boost levels.
- Ensure all piping connections are secure and leak-free.
- Consider custom fabrication for optimal fitment.
5. Wastegate Actuation Problems
Proper wastegate actuation is essential for maintaining boost levels. Issues here can lead to either underboost or overboost conditions.
Symptoms
Signs of wastegate actuation problems include:
- Inconsistent boost pressure
- Turbo lag or delayed response
- Excessively high or low boost levels
Solutions
To address wastegate issues:
- Check the wastegate actuator for proper operation.
- Adjust the actuator rod length if necessary.
- Consider upgrading to an external wastegate for better control.
Conclusion
Upgrading to the Mitsu TD06-20G turbo can significantly enhance the performance of an SR20DET engine. However, being aware of the common issues and their solutions is essential for a successful upgrade. By addressing boost control, oil supply, fuel supply, intercooler compatibility, and wastegate actuation issues, enthusiasts can enjoy the full benefits of their turbo upgrade.