Cat Converter was stolen so I put on an aftermarket CC with both sensors (also aftermarket of amazon) because the dealer wanted $4000! Problem is I have check engine light I cant get rid off. Ive had pretty success using amazon but I suspect its the cheap aftermarket sensors that are cuasing engine light.. Dealer wants $500 each for them! Question for you all, has anyone used aftermarket sensors and if so what have you had good success with?