91 foxbody "check" code 91
 

need help have a code 91......the car runs fine just when I go to floor it it just boggs out....when I realease itll pick up speed again....? exhaust leak..or fried o2 any input will be appreciated thanks

ended up being a spliced o2 wire patched it and no more "cel" (check engine light)
runs like a champ...love the sound of the flowmaster muffler