1996 artic cat zrt intermittent bogging and back firing

Hey everyone I have a 1996 artic cat zrt 600 with 1700 miles on it. Dg pipes delta force reeds. Having issues with the sled. Runs great half the time then all of a sudden bogs and back fires. I can play with the throttle it will pick back up then fall back on it's face. Will do it for awhile then all of a sudden run great again. Does this all the time runs great for 15 minutes then terrible for 15 minutes so on and so forth. Anyone have any idea what could be the issue? I'm hoping it's something common and a cheap fix haha. Any help is much appreciated

1996 artic cat zrt intermittent bogging and back firing