COBB Tuning FPR Manifold Reference Relocation Kit Subaru STI (GRB/VAB)

Cobb Tuning Fuel Pressure Regulator Manifold Reference Relocation Kit - Subaru STI 08-21

COBB Tuning builds hardware that solves real-world tuning problems, and this FPR reference relocation kit is a perfect example. Rather than leaving your fuel pressure regulator referencing a single cylinder runner — which can introduce unwanted pressure pulsations — this kit moves the reference point to a plenum-based source, giving the FPR a more stable and representative signal. It's the same approach used on the earlier 2001–2007 STI platform, and it makes a genuine difference in fuel delivery consistency on modified builds.

This listing covers the Subaru STI across the GRB (2008–2014) and VAB (2015–2021) chassis platforms.

Kit Contents

• Plenum-based vacuum reference fitting (COBB) — replaces OEM individual cylinder runner reference
• Reducing "T" fitting
• 4mm silicone vacuum line
• 6mm silicone vacuum line
• Black zip ties

Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and configuration are confirmed before ordering.

Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.