Thanks so much for this blog. I recently had an exhaust issue and the mech claimed it was the CAT causing the problem. So we removed it and the next day im driving really slowly on a rough road and the light comes on and im like what could be wrong. Never seen it light up like this for a couple of days. Will get it diagnosed and tell the mech to clear the error. Does anyone know a shop i can get them? Jumia and kilimall sell from overseas.