Secondary Cat Delete? - PLEASE HELP!
#1
Secondary Cat Delete? - PLEASE HELP!
hey i was thinking of removing the secondary cats on my 203, has anyone done this? can you pass emissions smog test without the 2nd cats? also which ones are the secondary cats? are they more near the front or the rear of the car? and do they have the O2 sensor or only the primary cats have that. thanks for your experience on this! bye!