Going rich

[Real2000CobraR]

I had my car tuned a few weeks ago and was very happy with the tune and numbers it made. Car ran a solid 11.7 at WOT on 93 with 23*. I drove it about 500 miles since the tune and its run great and held solid at 11.7. Today the car ran rich right from the get go. It was 10.5-10.9 at WOT. Any ideas on what might cause it to suddenly go rich? No codes/ no CEL. Car seems to run good just a tad down on power but not much. When tuned it had new plugs, bap, mafia and pullies installed.

Dirty MAF?

Thanks for the help

 

[Real2000CobraR]

Anyone?

 

[phatboy5015]

What type of wideband? Maybe it needs to be calibrated?

 

[Real2000CobraR]

What type of wideband? Maybe it needs to be calibrated?

Autometer NV. It's suppose to calibrate when you turn the key.