I NEED ASAP A OBD2 HEADER!

before it goes threw all the readiness monitors its going to throw a cat high efficency code you have to have the factory cat manifold or an antifowl on the down stream O2 with out this youll never get it threw nys insp

Spark plug non-fouler works just fine 99.9% of the time :nod. Have yet to have a customers car not pass NYSISP, at least the ones on the street that I’m “worried” about that are applicable to this OBDII bs…

correct it will work just fine and only needed on the downstream or rear O2 sensor