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The Audi Mk1 TT 1.8T is a beloved vehicle among car enthusiasts, known for its sleek design and impressive performance. One of the most effective ways to enhance the power of this sports car is through turbo upgrades. In this article, we will explore the Garrett GT28RS turbo upgrade and the potential power gains of up to 70 horsepower.
Understanding the Mk1 TT 1.8T Turbo System
The Mk1 TT 1.8T comes equipped with a factory turbocharger that provides a decent amount of power. However, for those looking to push the limits, upgrading to a more efficient turbocharger like the Garrett GT28RS can significantly enhance performance.
Stock Turbo Specifications
The stock turbocharger on the Mk1 TT 1.8T is designed for a balance of performance and reliability. Here are some specifications:
- Type: K03 turbocharger
- Max Boost Pressure: Approximately 1.0 bar (14.5 psi)
- Power Output: Up to 180 hp
Why Upgrade to the Garrett GT28RS?
The Garrett GT28RS is a popular choice among enthusiasts for several reasons:
- Increased Flow: The GT28RS offers a larger compressor and turbine wheel, allowing for increased airflow.
- Improved Efficiency: This turbocharger operates at higher efficiency levels, reducing turbo lag and improving throttle response.
- Power Gains: Users can expect power gains of up to 70 hp with proper tuning and supporting modifications.
Key Features of the Garrett GT28RS
Some notable features of the Garrett GT28RS include:
- Ball Bearing Design for quicker spool times
- Compressor Wheel Diameter: 60mm
- Turbine Wheel Diameter: 53mm
Installation Considerations
Upgrading to the Garrett GT28RS requires careful planning and consideration. Here are some important factors to keep in mind:
- Supporting Modifications: To fully benefit from the turbo upgrade, consider adding a high-flow fuel pump, upgraded intercooler, and a performance exhaust system.
- Tuning: Proper tuning is essential to maximize power gains and ensure engine safety.
- Mechanical Skills: Installation may require advanced mechanical skills or professional assistance.
Potential Power Gains
With the Garrett GT28RS turbo upgrade, Mk1 TT 1.8T owners can expect significant power gains. Here’s a breakdown:
- Stock Power Output: Approximately 180 hp
- Expected Power Output with GT28RS: Up to 250 hp
- Power Gain: Up to 70 hp, depending on supporting modifications and tuning
Conclusion
Upgrading the turbocharger on the Mk1 TT 1.8T to a Garrett GT28RS can unlock impressive power gains and enhance overall driving experience. With the right modifications and tuning, enthusiasts can enjoy a significant boost in performance, making their Audi TT a true powerhouse on the road.