my car has a terrible backfiring problem and its daylight and its a large backfire you can see fire come out of the exhaust pipe.... if its dark everytime it even puts a little you can see a flash of light, i am not sure why it does this?

 

Well, according to your profile, you're asking in the wrong place, though I imagine a few folks here will try to answer your question anyway (and probably quite accurately, too)

For future reference, an '86 is a Second Generation RX-7....

 

normal, yor prob running too rich. Mine does it too,lights up he rearview mirror. People go far away then