So I replaced the burn off relay, power relay, harnesses and it changed nothing. I ordered the maf sensor itself changed it this morning and the car won't even run. Code 33 still springs, pulled plug on maf to drive it home. This is a 89' l98 firebird. I am lost on what to try now. Any help would be appreciated.

 

with about 13 years with mine, first rule is never blindly chase codes.
youll replace parts often that arent bad. can't tell ya what wrong but can tell ya ive wasted allot of money on false codes.