Ford Focus ST ECOBoost Flashed for Performance Upgrade VRTuned.com March 29, 2016 Product Info, Tuning Tech We here at Vivid Racing took another Ford Focus ST to a powerful new level with our VR Tuned ECU Stage 1 upgrade. This vehicle was already equipped with an Agency Power catback exhaust and the owner wanted to gain more performance through the RPM curve. The VR Tuned flash upgrade is done completely through the ...
