Process West Black Reverse Inlet Manifold - Drive By Wire Bosch 74mm- MY1999-2021 Exhausts_Exhaust Backboxes Instantly increases octane rating by

Instantly increases octane rating by up to 15 RON: 1 tin (1 litre) mixed with 80 litres of pump fuel increases petrol octane by 5 RON

and with a tensile strength in excess of 237

This latest generation 4 Stage RCM dry sump system has been developed with world renowned motorsport engineering specialist Auto Verdi Racing

ST202504S030

Process West Black Reverse Inlet Manifold - Drive By Wire Bosch 74mm- MY1999-2021 Exhausts_Exhaust Backboxes Instantly increases octane rating byThe Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX STI when perfect aesthetics meet high end performance. What you see here is the result of years of research and testing, multiple prototypes and a ground up fully featured design process that makes this a key asset of our product range. Available in two major configurations they feature a full billet plenum with generous billet bell