good morning all , new to site, I live in Canada, have a 2010 Ralliart art, I have a pop through intake on acceleration, I have cold air intake, exhaust , new plugs boots , timing chain, it seems under heavy acceleration in summer but winter it is more often, I am going through o2 sensors they are throwing a heater code, and car does run rich and need another back o2 sensor, my question is do I need a tune? Bad o2 sensors is there better than ngk? Frustrated?