Set about fitting this 2day, removed the old downpipe, and offered up the new, but the one corner of the flange at the bottom was catching the sump, so had to cut of around 5-6mm of metal to stop it fowling, all bolted up fine after, soldered alys o2 sensor plug to the new sensor and fitted that.... fired it up,,,,sealed 1st time.... took it for a quick spin, seems to have improved the boggyness we were getting and no longer banging/missing on hard accelaration.....so i think the old o2 sensor was duff