Running richer all of a sudden

[turbosam6]

Hooked the laptop up last night and cruised around town a bit, and my actual A/F ratio was a lot richer than last time I checked. I was around 14:1 cruising under light throttle, now its like 12:1. WTF happened? I did change my DP to a 3.5" from a 3", but that would not cause it to run rich. The 02 sensor is located slightly differently than my previous dp, just a couple inches, shouldn't matter.

 

[TURBO 6]

Any difference at WOT? I wouldn't worry about part throttle unless it's giving you drivability problems.

 

[Otto J]

Check the air temp sensor on the dashboad and make sure it doesnt read - degrees, If the sensor goes bad it will make the car run richer