Lean bank 1 and 2 2001 4wd auto blazer California emmision I cut the actual cat off not the precat to take it out of limp mode been driving it I have a lean code popping up I keep clearing it to drive it but how do you get around a lean code is there any way to get around it without ecu or tune I will try a new computer but I wanna get around it I tryed a few washers made a tiny difference