wrxgrillin

I have experienced this problem as well. I went through and changed the sensors and still the SES light kept coming on. I tried spark plug fowlers, even tried two of them but that worked for a lil then the light kept coming on continuously. A good friend of mine has a sti with down pipe exhaust and all that. On his down pipe the bong they made for the o2 sensor doesn't only pull out of the way of exhaust flow but away from it too. I went to an exhaust shop had them make angled pipes just bug enough for the o2 sensor and that has solved that problem. I actually called stillen and told they should make that already come on the hi flow cats like my friends down pipe