Supply & Demand
Our Top feed fuel rail conversion kits are designed for early Impreza turbos from 1992-2000 fitted from the factory with side feed injectors (known commonly as GC8 GF8, Versions 1-6).
The conversion kit allows installation of the later style top feed injectors which can be found on WRX / STI model Impreza’s from 2001+.
When tuning your Subaru to obtain increased BHP, side feed injectors are limited as to the volume of fuel they can supply to support the increased power. Switching to a top feed injector offers more options where injector sizes and manufacturers are concerned, therefore enabling greater fuelling options (and typically at a lesser cost than performance side feed injectors).