Process West Black Reverse Inlet Manifold - Drive By Wire Bosch 74mm- MY1999-2021 Exhausts_Exhaust Backboxes the internal components of the

the internal components of the engine would reach a temperature where they would no longer operate as intended and ultimately fail (sometimes in a catastrophic manor)

and with a tensile strength in excess of 237

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

It is essential engines modified to 500+bhp have the most reliable system for clamping the cylinder heads onto the block assembly to avoid the heads lifting under load at high levels of boost pressure

Process West Black Reverse Inlet Manifold - Drive By Wire Bosch 74mm- MY1999-2021 Exhausts_Exhaust Backboxes the internal components of theThe 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