Cobb TD05H-20G-8 Turbocharger for WRX STI

If you're looking to significantly boost the performance of your 2008-2014 Subaru Impreza WRX STI, a larger turbocharger like the COBB TD05H-20G-8 is a popular choice. This unit replaces your factory turbo with a unit that can move more air, allowing your engine to produce more power. It's a substantial upgrade for those seeking a more aggressive driving experience and improved acceleration.

The TD05H-20G-8 features a larger 8cm^2 turbine housing and a 20G compressor wheel. This combination is well-known for providing a strong surge of power in the mid-range RPMs, offering a noticeable improvement over stock without being overly laggy for daily driving. The compressor housing is cast aluminum, and the turbine housing is cast iron, built to handle the increased heat and pressure associated with higher boost levels. This turbocharger is designed as a direct replacement for the factory unit, simplifying the installation process. It's important to note that upgrading to a larger turbo like this will require supporting modifications, such as an upgraded fuel system and an engine tune, to ensure optimal performance and reliability.

When installing a turbocharger of this caliber, it's crucial to have a professional engine tune performed by a reputable tuner. This ensures that your engine's air-fuel ratios and timing are correctly adjusted for the increased airflow, preventing potential damage and maximizing the performance gains. You'll also want to ensure your exhaust and intake systems are up to the task of supporting the increased airflow. This turbocharger is a key component for building a more powerful Subaru WRX STI.