flames out the exhaust

[nismojunkie]

my friends and i went to our racing spot last night and we did some racing. i beat an old buick with a 400ci small block, and a 1994 grand am v6 with intake and exhaust. when i raced the buick they said a small flame shot out of my exhaust when i was shifting to 2nd gear, and when i was backing into my parking spot, i reved it and barked my tires and it shot out a flame then too. my question is , is this bad? and why does it do that? my car has been backfiring some could it be connected with that? anyway, i know someone will have a comment about racing, so please dont flame or anything like that. there were 4 of us in a relatively well lit, secluded parking lot. no pedestrians, no other traffic. thanks

chasse

[NISTECH]

Don't street race!

The flames are likely due to fuel build up in the exhaust as your car might be running a bit rich. probably due to a bad or poorly grounded Mass airflow sensor.

[nismojunkie]

where do i check the ground for the MAF? i know it has a few wires leaving it but they all go to the harness above the intake i think?would new plugs or wires help the fuel burning issue?