I have a 2001 Mustang 3.8. I recently installed Shorty Headers with Flow Masters and a Cold Air Intake as well. About 2 weeks after, my "Service Engine Soon" light came on. I had it reset. Code showed O2 sensors. Went a couple of more weeks and then on it came again. I've been through this for a while now. Whenever the light comes on, I can tell there is a slight loss in power. My question is; will changing my O2 sensors fix this or is there another remedy? Any help is greatly appreciated!