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Me and a friend have a 2002 F4i
Mine has a earlyer build date then his dose and My bike dont
have a O2 sensor on it and his dose is this something I should look into?
His bike is prolly a Cali model to meet California emission standards. My understanding is the o2 sensor are stock on the cali and 2006 F4is (both cali and non-cali)