Ok, I have a B18b swap with a Greddy turbo. The engine is a USDM LS engine and it's the same year as my car(1999). I live in Cali and I'm up for a smog check this year and I know that I'm not going to pass. I can smell the fumes coming out of my exhaust. I'm running an OBD I LS ecu with the Greddy blue box for fuel management. What can I do to pass? Am I screwed? :unsure: I read somewhere on here that I can add something to my fuel tank when it's half empty. I forget what it was. Will that help? Does anybody know anything about this? I don't know any shops around Northern Cali that can hook me up. Can anyone recommend one that will hook me up if I slip him a bill? Any help is much appreciated. Thank you.