to day i ran my 33 gtst down the 1/4 after a couple of passes at 12.2@123mph with a crap 60 foot of 2.2, i ran my best 60 foot at a 1.8 but right after i hit second gear a all mighty bang went off (back fire) and the car lost power for a split second so i came off the gas until 3/4 track and jump on it again and it felt fine ,i got back to the pit area and i noticed on when you lightly press the gas it runs like its missing ,i also noticed this in the last three runs leading up to my last run ,now i think its ???????? but what i would like is some input from some sau members on what they think it could be......thanks.