2011 5.0 auto. Stock. Running regular fuel, also. What should I expect to run?! And should I cycle a tank of premium? Also track is in Gainesville, Florida.
Get it about 1/4-1/2 full with 91-93, drop the tire pressure down to 20-25 in the rear and the max pressure for the front and let her rip! Hope for 12s. I wouldn't load the convertor off the line either just flash it from idle, you can try either method and see what works best for your times. Good luck!