hey guys !!! got my car running again , got new headgaskets in and my delteq and car seems to be running great. Gutted my cats and uplugged my rear o2s so I have codes 140 and 160. !EGR so go a 400 too , no other codes at all. Sometimes my SES light starts flashing and I have no idea what it is , no other codes or anything , the only thing I know that sets it off is missfire , but I have not gotten any codes for it and the car isnt pulling any Knock retard at all. Any Ideas ???