Bugger, the post I've is to the extremely really early British isles aw11 ecus which didnt manage to run a cat in excess of in the UK, so no further facts about exactly what the O2 sensor does listed here. In spite of everything the grinding and machining the block https://sethswlqf.blogsuperapp.com/27238819/a-review-of-4age-20v-itb