I ran my ranchero at the track with the tailgate down. Counterintuitivly, i have been told there is less drag with the tailgate up (tho i do understand the theory)
It would be fun to do an a-b 1/4mile test with a consistent truck. Mph would be the telling stat.
IF I ever get it to a true Test n Tune, I'd like to do back to back runs with it up and down. Also, I have shift point and timing to mess with.... but it seems I'm lucky to get my one clean pass... LOL