Mmkay, I'm just trying to get an overview of the exhaust work I'm going to need to have done here, so I have a couple questions. First, the Link isn't an OBDII ECU, so I won't really need a catalytic converter will I? Since I wont need to worry about catalytic inefficiency CE lights. Second, cat or no cat, I'll only need 1 O2 sensor right? The narrow band after the cat? I have a 2000RS BTW.