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John Urist showed up with a reverse-rotation ProCharger F3R blower. It mounts in the center of the engine, and the impeller is fed air directly from the front of the car. The reverse mounting location added significant horsepower due to the ram-air effect and less power needed to turn the supercharger. The New Mexico racer quickly realized there wasn't enough time to sort out the new blower combo and quickly converted back to his side-slinger ProCharger blower. A broken header pipe prevented him from going rounds on Sunday. He did crack off a 7.54 at 188 mph during a test-and-tune hit.