Last year i had a APS 3'' catless exhaust installed on my 02 wrx ever since then the CEL has been on, which i didnt really mind but now the car needs to pass inspection and of course it doesnt pass with the CEL on. Is it posible to clear the CEL w/o using a CEL fix , i all ready had a cat put on the exhaust and a new o2 sensor to replace my old one which was no good. Please help, and i really want to keep the exhaust i have now but i just need it legal.