PREracing

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

SKU: PRE-100008 ISBN: 1
$49.99
$49.99
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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.

Customer Reviews

Based on 3 reviews
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R
Robert Collier
Stumble be gone

This was another great purchase. My car is has basic intake and cat back mods with the OTS stage 1+. That stumble drive me insane. I wasn't ready for upgraded fuel system as my plan is to turbo and fuel upgrades at the same time. This kit is well designed and does not dig into the budget for the simple freedom away from the notorious stumble.

C
Chayanne Castellano
Amazing

Good product and quick shipping

R
R.C.
Sanity restored

I have only owned my STI for a month and the first 50 miles of daily driving that stumble annoyed me. Searching sites and didn't want to spend to much on a resolution since it was going to stay stage 1 for quite sometime. Found this stumble kit and boom the car is definitely better between 2300 and 3000 rpm. Should do just for future basic bolts ons.