problem with phoenix chip

[99stackedpowerstroke]

well i ordered my chip a few months back, had no problem with it, i hardly use my loped setting but here lately when i use it, sometimes it will work and sometimes it wont, a lot of times i have ta rev it up and then it might work, if i leave it on the loped setting for 2-3 min my check engine light comes on, it chatters real fast, not a lope, and ta make it stop i have ta shut the truck off, i get no smoke out of it, from what im told, it should start right away and i could leave it on all day with no problems and have smoke, so whats the problem?