13 duramax tuning
 

Hey guys it’s my first post on here I recently made the mistake of buying an efi live autocal from ppei as I didn’t realize at the time of purchase it’s an emissions friendly tuner and now I have unplugged my exhaust and that stuff and it is giving me a variety of y engine lights and going into limp mode what would you guys recommend nd doing new tuner is there a way I can still flash it??