my check engine light just turned on and i dont kno if i should take to the dealer becuase i got a HFC from cp-e and a catback. i was thinking of taking out the cp-e hfc and putting the stock one back on to go to the dealership.
what do you guys recomend

 

Pull the code first.

 

so i went to auto zone to pull the code and it gave me exactly this

BBCatalysy efficiency below threshold

Probable cause
BB1- faulty catalytic converter
BB2- exhaust leak near rear H02S
BB3- faulty rear H02s

what can i do to fix this any of you have the same problem with the cp-e system