G8 Gt Performance Problems: Common Issues After Upgrading the Camshaft and How to Fix Them

by

The G8 GT is a powerful vehicle known for its performance and handling. However, after upgrading the camshaft, many owners experience various performance problems. Understanding these issues and knowing how to address them is crucial for maintaining optimal performance.

Common Performance Problems After Camshaft Upgrade

  • Loss of Low-End Torque
  • Rough Idle
  • Check Engine Light Activation
  • Poor Fuel Economy
  • Increased Engine Noise

1. Loss of Low-End Torque

One of the most common issues faced after a camshaft upgrade is the loss of low-end torque. This can lead to sluggish acceleration and an overall decrease in drivability.

Causes

The loss of low-end torque can be attributed to:

  • Camshaft profile that favors higher RPMs
  • Improper tuning after installation
  • Inadequate supporting modifications

Solutions

To resolve this issue, consider the following:

  • Re-tune the engine with a focus on low-end performance
  • Install a camshaft that is designed for better low-end torque
  • Upgrade supporting components like the intake and exhaust systems

2. Rough Idle

A rough idle can be another frustrating consequence of a camshaft upgrade. This issue often manifests as a shaky engine at rest.

Causes

Common causes of rough idle include:

  • Incompatible camshaft specifications
  • Incorrect ignition timing
  • Vacuum leaks in the intake system

Solutions

To fix a rough idle, you can:

  • Check and adjust ignition timing
  • Inspect for vacuum leaks and repair as necessary
  • Consider a camshaft with idle characteristics suited to your needs

3. Check Engine Light Activation

After upgrading the camshaft, many drivers notice the check engine light illuminating. This can indicate various underlying issues.

Causes

Potential causes for this issue include:

  • Faulty sensors due to altered airflow
  • Improper tuning leading to error codes
  • Exhaust leaks affecting O2 sensor readings

Solutions

To address the check engine light, consider the following:

  • Use an OBD-II scanner to diagnose error codes
  • Re-tune the engine to match the new camshaft specifications
  • Inspect and repair any exhaust leaks

4. Poor Fuel Economy

Upgrading the camshaft can also lead to decreased fuel economy, which is often a concern for performance enthusiasts.

Causes

Factors contributing to poor fuel economy include:

  • Increased fuel demand due to higher RPM operation
  • Poor tuning that does not optimize fuel delivery
  • Incompatible components that disrupt airflow

Solutions

To improve fuel economy, consider:

  • Optimizing the tune for better fuel efficiency
  • Using high-quality fuel to ensure proper combustion
  • Ensuring all components work harmoniously

5. Increased Engine Noise

After a camshaft upgrade, many drivers report an increase in engine noise, which can be concerning.

Causes

Increased engine noise can arise from:

  • Higher lift and duration of the new camshaft
  • Inadequate valvetrain components
  • Improper installation causing mechanical issues

Solutions

To mitigate engine noise, consider the following:

  • Upgrade valvetrain components to handle increased stress
  • Ensure proper installation and alignment of the camshaft
  • Consult with professionals for tuning and adjustments

Conclusion

Upgrading the camshaft on a G8 GT can lead to significant performance enhancements but may also introduce various issues. By understanding these common problems and implementing the suggested solutions, drivers can enjoy the full benefits of their upgrades while mitigating potential drawbacks.