How to do an ECU Flash on a Ford Focus RS VRTuned.com September 14, 2016 Company News, Media & Events, Product Info, Tuning Tech Tuning the Ford Focus RS 2.3L EcoBoost is very easy with the VR Tuned OBDII iFlash system. This true custom tune allows you to read and write the Bosch MED17 ECU through the OBDII port. We do not provide...
