You first have to ask yourself whats the setup that the M3 "tune" is for ? Is it a red label 413 or a silver label 413? If its a red label then EWS delete is simple no chip required. Why would you want to delete the O2 sensors ? The only time you need to do this is when you are running OBD2 headers on an OBD1 engine but then you just block them off and run the one downstream. __________________ BMWs and SHOs... |