Ford Focus RS/ST (2009-2010 MaxxECU RACE H2O Plugin STANDARD MaxxECU RACE is flexible,reliable and fast. MaxxECU will give you full engine control! Built-in exhaust temperature (type-k) amplifiers in harness Uses stock vehicle knock sensor(s) Built-in 400kPa(3bar boost) MAP-sensor Fast and reliable USB PC-communication Android MDash app wireless BT-communication as dash Stock MAF-sensor can be removed (if exist) and replaced with MaxxECU internal MAP sensor Control orginal idle solenoid, AC, tachometer and other original equipment* Fuel injectors can be replaced with optional high or low ohm Stock LSU 4.2 wideband oxygen sensor is used No change in the vehicle's original system needs to be done* MaxxECU H2O (waterprotected) since the ECu is placed in the engine bay. * See technical documentation.