Tuning the Volkswagen Polo GTI MK5

2009 Volkswagen Polo

GTI – 6R – MK5 – 1.4 turbo petrol – Bosch MED17.5.53 ECU

The Challenge

In this article, we will delve into the process of tuning the Volkswagen Polo GTI to optimize its power output for its chassis.

The Volkswagen Polo falls under the supermini car category and has been in production since 1975. Volkswagen’s focus, particularly with the fifth generation of the Polo, has been on developing low-consumption powertrains, enhancing perceived quality, and improving safety features. The Polo GTI is designed differently from the standard Polo to reduce the vehicle’s tendency to understeer by braking the front wheel on the inside of the bend when cornering quickly.

The Solution

The 2009 Polo GTI is equipped with a 1.4L turbo petrol engine controlled by a Bosch MED17.5.53 ECU. The ECU’s programming can be customized to increase the vehicle’s power, a process known as a power tune. With a power tune, the Polo GTI’s power and torque can be boosted, leading to improved throttle responsiveness and a more exhilarating driving experience.

With a custom power tune from Alt Tune, you can tailor the ECU settings to align with your preferences and driving environment, ultimately enhancing the performance of your Polo GTI to match your desired specifications.

Increased Power and Torque


Power Increase


Torque Increase

Further Benefits Of Tuning The Volkswagen Polo GTI

Increased Power and Torque

Increased power and torque result in safer over taking and easier open road driving. Throttle response is also increased. 

Years of Development

We have been tuning Polo’s 1.4L turbocharged petrol engine for years, and understand how they work as well as the limitation on factory hardware.

Emissions solutions

We have solutions for emission systems such as disabling the catalytic convertor system and associated DTC fault codes. 

So, if you’re looking to take your Volkswagen Polo GTI to the next level, don’t hesitate to reach out to us! Our dedicated team is ready to unleash the full potential of your vehicle and make your driving dreams a reality!

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