I have a d1sc procharged 99cobra t56, aeromotive return style fuel system a1000 sumped tank, sra, e85, 390s.its 565 at the wheels i took it to the track and got two Runs in. First run i left at 3500 bogged so bad the car almost died 2.8 sixty foot I traped 122 mph. The second run i left at 6000 rpm but i snap the belt tensioner off the line . I don't understand why it broke the tensioner and what do you think it should run if I get a good launch.