Tune all messed up

[614talon90]

So last night I went out for a drive to collect data for my tune. I was on my way back home the car was running great, then all of a sudden it started misfiring and running very rich. Got it home parked it. Today I went out determined to figure this out, and to my suprise the car wasent misfiring. The problem is though that when warming up in openloop the AFRs are just as they should be. But then as soon as it goes into closed loop it goes to crap. It will start idling at like 11.5 to 12.9. I checked all vacuum lines, verified my base fuel pressure and even changed the front 02 sensor. I changed it because my reading stopped fluctuating, the sensor reading will just sit at like .45 with the occational jump all the way to 1.53..... my fuel trims are all screwed up now they were perfect. Any ideas what may have happened? I will post a log as soon as i get home. Thanks guys

 

[AK Maniak]

Have you checked your ECU?

 

[614talon90]

Today no recently yes. I got in the car to go home and it ran fine. Although I did notice while I ha my laptop hooked up that no matter how much I changed my deadtimes that my combinedft wouldn't go below 2.5.