My car was working great for the longest time but today on the way home from work it started running really poorly. It starts out ok but when I give it the pedal it stumbles really bad and sometimes dies on deceleration. Like I said it just started doing this all of a sudden. It is a Buick 455 with cam, headers ez efi 2.0, msd 6a, pertronix 3, manual transmission. I tried resetting the setup wizard but had no luck after that either.