D diana Member Jul 23, 2008 #1 Our 1993 F250 truck passed it's smog test but the shop said they wouldn't issue the certificate because the truck has a very good quality but after market catalytic converter. WHY???
Our 1993 F250 truck passed it's smog test but the shop said they wouldn't issue the certificate because the truck has a very good quality but after market catalytic converter. WHY???