Tuning a 2.4L Focus ST to 600 WHP! | PTE 5558 w/AUX Fuel on E50

In this video I finish up tuning one of Speed Perf6rmanc3's 2.4L Focus ST Builds to 600 WHP using their Precision Turbo & Engine 5558 Gen 2 Turbo Kit and Aux. Fuel system. This 14' Focus ST is running their 2.4L Stroker Stage 2 Engine Build with Stage 3 Camshafts and stock 2.0L Cylinder head. Watch the video to see how it progresses from making ~400 WHP on 93 octane pump fuel to 600 WHP on E50.
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