My '00 Pajero with the 12-valve 6G72 did not come with oxygen sensors from the factory. So basically there is a default value for air/fuel ratio, and it's not just fuel economy but also performance that is affected as a result.

I've decided to retrofit oxygen sensors, but I also need to replace the PCM to accommodate for this. I specifically want to go for an OBD-II PCM. Although 12-valve 6G72 American Monteros were pretty rare in 1996, it still was an engine choice alongside the 24-valve 6G72 and the 6G74. Does anybody happen to know what the part number is for a '96 12-valve 6G72 PCM? Thanks!