My 9 is a non-U.S. model (Canada). These models supposedly come with O2 sensors which the U.S. models don't have. I'll be installing a Cobra Fi2000r shortly. Was told the O2 sensor may conflict with the fuel controller as the sensor may try to remove fuel while the fuel manager is trying to add it. Anyways, there are plug and play O2 sensor eliminators (O2se) on the market that claim to solve this problem (apparently the 9 needs two of them). Anyone out there that can verify this and separate the b.s. from the facts. Feedback appreciated.