PREracing Anti-Stumble Kit - Fits Subaru 08-21 STI

The PREracing Anti-Stumble Kit for the 2008-2021 Subaru WRX STI is designed to tackle a common issue where stuttering occurs in the fuel system, particularly in the feedline between the Fuel Pressure Regulator and the Firewall. This issue is often due to the fuel damper, which can cause fluctuations in fuel pressure, leading to inconsistent fuel delivery and engine stutter.

By removing the Fuel Damper and replacing it with this anodized black machined aluminum kit, you effectively eliminate this cause of stuttering. The kit's design helps smooth the fuel delivery, ensuring consistent pressure and better engine performance, especially during high-performance driving or tuning.

Overall, it’s a simple yet effective solution for those looking to optimize their fuel system, reducing the likelihood of fuel system hesitation or stutter during acceleration.

Features

• Addresses and removes the OEM Fuel Pressure Damper that causes the stumble issue.
• Black Anodized Billet Aluminum Construction
• Comes with all the pieces needed to install
• Made In The USA
• No tune required for install

We recommend tuning the vehicle for the best results in fixing the stumble issue, but it is not required for the vehicle to run and drive properly.