Yes I can make any OBD-II test pipe and downpipe but only make them for Hondas now. I use a piece of a small cat to fool the O2 sensor into thinking the cat is still on. Pretty simple solution and cheap of course. No need to fool around with the ECU. I myself will be going with a Power FC ECU so I will not have the problems associated with OBD-II. Remember, all JDM ECU's are OBD-I. OBD-II is only a North American regulation. Most UK ECU's whould be same as JDM spec.