swampyankee,
The OBDII port will not function for an emissions test....Ohio was to do the same thing for 97 and up trucks but instead they put the truck on the rollers for the test, (did mine in March this year). If they do a visual inspection too (Ohio does) then yes you need to replace the components. Good luck on your test...by the way, mine passed the opacity test with a 0% opacity with an allowed 40%, even with Swamp babies.
The OBDII port will not function for an emissions test....Ohio was to do the same thing for 97 and up trucks but instead they put the truck on the rollers for the test, (did mine in March this year). If they do a visual inspection too (Ohio does) then yes you need to replace the components. Good luck on your test...by the way, mine passed the opacity test with a 0% opacity with an allowed 40%, even with Swamp babies.