I bought a 2006 xb. At the time had no Idea it had a turbo. Went and had the oil changed and that's when I found out. When I was driving it home from the dealership, I filled up with High Octane Gas to just help clean everything a little bit. I'm now on my second tank and put in 87 octane. Within 20 miles of the new tank of Gas I had the, Check Eng, VSC, and Track Control Lights come on. I used the computer to scan the ECU and had the codes of: P0420 and C1201. From some research, this all seems to be air/fuel Oxygen and CAT related. Do I need to run higher Octane gas because it has a turbo?