its been known that with a dead hook (better traction off the line) your MPH will be lower but your ET will be better. when your spinning your MPH will increase bc your spinning he engine in higher rpm allowing the engine to build speed faster, but the lack of traction hurts your ET

its the same way a car can run a 11.5 @ 105mph and someone with the same setup with ****ty traction can run a 13.5 @ 115mph

your MPH went down bc your getting better traction