NHRA limits the mag's to 44 amps, as part of an effort to slow them down for safety. With out more spark, it's hard to light the immense load of fuel. So when it doesn't light, there is no combustion pressure to blow all the fuel out of the cylinder. Fuel builds up, it hydro locks, and boom! So the safety rules helps them blow up and crash. They all want to win really bad, they are on the edge with their tune ups. Throw more fuel at it, make more power, have a chance to win, and a chance to blow up. Or cut back the fuel load, make less power and lose. Tuff choices.