Sorry if this has been posted before, did a few searches but couldn't find anything.
I'm in the process of building a single turbo LSA (no supercharger) and I was wondering what do I need to change in the software so there is only a single exhaust system. From factory there are two O2 sensors on each bank (pre and post cat) but there will only be a single 4" dump pipe with the rest of the system to follow. Is this something normally done or do most single turbo builders split the system into twin and still use 4 O2's?