Mine is a 2005 Tiburon and it starts and runs but it cutsout or bogs down much like a Oxy sensor, it has something to do with air cause sometimes it will just pick up and take off, today it about died
I have replaced plugs, wires, coil pac, Selenoid valve canister behind the motor and both parts under car near the rear, I replaced the Camshaft Position sensor and it still runs crappy, it gives the following codes PO449, and PO340 which is New, plus now today it gave the misfire codes too ?