Thankfully, my crew had run Project 156—a prototype V-twin-powered Victory built by Roland Sands Design—on a dyno at Sangers Cycle in Fort Collins the previous afternoon to establish baseline fuel calibration prior to running at higher elevation. Even with that, our first practice—on a stretch of the course that climbed from 10,900 feet to just over 12,000—was plagued by just about the worst throttle response imaginable. On the gas, power was good, but at smaller throttle openings we fought an intermittent misfire, buck, surge, and even a total flameout in a low-gear hairpin. Such are the challenges on a project of this magnitude, with troubles compounded by the thin air and challenging conditions at Pikes Peak. But my AF1 Racing crew, working with a MoTec technician and pair of Victory powertrain engineers, rose to the occasion with more tuning on a Superflow dyno at Fox Performance in nearby Colorado Springs that afternoon.