MY01-05 WRX / Sti Anti-Fuel Surge Tank We have completed development of a fuel surge tank to suit the MY01-05 WRX and WRX STi fuel pump assembly.
It is recognised that fuel surge does occur with light fuel loads in the Subaru WRX, leading to starvation. This shortens range on the track and adds mass to the vehicle, with unnecessarily high fuel loads for Super Sprints and track racing.

The HyperFlow surge tank was developed in close collaboration with MRT Performance, who originally identified the problem through their significant Race experience.

The Fuel surge tank has been developed over many months to ensure the materials and configuration are durable and perform. A custom thermoplastic base has been created from fuel resistant materials. The base interfaces with a CNC machined billet alloy top plate that is fixed to the fuel pump frame.