Ford Focus ST 225 MK2 Air Filter Kit with RS Style ECU Relocation BracketThis is a full induction filter kit and comes with all the parts and filter needed for the vehicles below. An open air induction kit will give your car that ever needed increase in induction. This in turn will give the vehicle an increase in BHP and more importantly torque. Ramair foam filters are known for their clean and smooth induction tone often desired by performance car owners. This kit will replace the existing restrictive airbox in your