It was the guy at the exhaust place when i said could i fit 2 different cats he said they had to be euro4 or 5 otherwise my sensors would still find a problem and trip the engine light. the link to the cat that was put on here is a 200cell, apparently the commodore one is 900cell, also called euro4, or something like that lol
i just spoke with someone else and they said a similar thing and he also said that if one side is faulty then a good chance the other side is to, i rang the guy doing the change on monday and asked if i should do both sides and he said i could but maybe just wait and make sure the left side is faulty before swapping. i just plugged in the scan tool again and it only says bank 1 code, im assuming if the left side was also faulty it would throw the bank 2 code aswell??
An interesting observation though, i looked at the live data and the reading coming from the 02b1s2 and 02b2s2 both hover around .760 from what im reading, thats the reading of the sensor after the cats, and the cat thats faulty should be causing the reading to be different on that side, anyone else know what there readings are on the 2 sensors?
