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tuning and hard driving does take its toll on the Focus due to its already marginal cooling system
Standard Airbox with Performance filter installed - 388bhp
This causes the probe to read a less accurate signal which will then not trigger the ECU into recognising the catalyst is being less efficient than the ECU would allow
this exhaust is on another level of loud
our Stage 2 carbon air-box with has been designed for 400+bhp and currently being tested on a 550+bhp RS
Forge blow off adapter EBC tuning and hard driving doesAtmospheric Blow Off adapter specifically designed to fit the ST180. Simple in execution, yet offering the desirable atmospheric blow off valve sound, this product has been designed to be fully compatible with the engine management systems employed.