The smoke obscures the starting lights just like the front tire does. The timer doesn't realize the truck has gone until it is way down the track and the smoke dissipates. If you huffed a turbo at 1000 ft on a run that otherwise would be even better than 11. 53, you would be well over 100 mph at 100 ft. You would not slow down all the way to 69 mph in 320 ft. (quarter mile = 1320 ft). Using some NHRA records as guidelines, to run 11. 50s in the quarter, trap speeds would be around 115 mph. Since the run would have been quicker if power stopped at the 1000 ft mark, 11. 2 seconds is more likely at 120 mph trap speed. To get a 115-120 mph trap speed, the truck would be going well over 100 mph, more like 105-110 mph at 1000 ft. Therefore, it did not run 11. 53 at 69 mph. It ran a slower et that is consistent with something over 69 mph at 1000 ft, maybe 80 to a max of 95 mph trap speed would be reasonable if the run was complete.
Diesel Dynamics realizes that smoke obscured the start lights on the runs that seemed to be in the 10 second range. Ten second quarter mile elapsed times are not consistent with the observed 110-111 trap (ending) speeds. That trap speed is very reasonable for 11. 96 seconds elapsed time.
Remember KatDiesel's recent 11 second slips that he did not report himself because he realized they were bogus for some reason. His Ram dynoed in the low 500 hp range. The white DD Ram dynoed at 740 hp with nitrous. High eleven second and low 12 second et's are reasonable for the DD truck, in my opinion.
Because of the above, I think it is most likely that the Diesel Dynamics time slip of 11. 96 is the first true eleven second run for one of our Turbo Diesels. Impressive for a fully loaded 4 wheel drive, leather seats, quad cab, etc.
Attention: TDR Forum Junkies 
