Stutter/misfire at idle

[bfc10]

I have a stutter at idle but the car seems to run ok, can anyone see any problems with the following data from ECUTalk or my wideband readings?

RPM Throttle Timing AAC Injector O2 Sensor Air Flow 937 0.48 20 11 2.42 0.01 1.32 937 0.48 20 11 2.42 0.01 1.31 962 0.48 20 11 2.37 0.01 1.32 937 0.48 16 11 2.36 0.01 1.32 962 0.48 20 11 2.36 0.01 1.32 962 0.48 16 11 2.35 0.01 1.32 937 0.48 16 11 2.35 0.01 1.32 950 0.48 20 11 2.36 0.01 1.32 925 0.48 18 11 2.38 0.01 1.32 887 0.48 20 11 2.4 0.01 1.32 875 0.48 22 12 2.43 0.01 1.32 862 0.48 24 12 2.46 0.01 1.32 862 0.48 26 12 2.5 0.01 1.31 837 0.48 26 12 2.53 0.01 1.32 862 0.48 30 12 2.51 0.01 1.32 912 0.48 22 12 2.47 0.01 1.31 950 0.48 20 12 2.44 0.01 1.32 937 0.48 18 12 2.41 0.01 1.32 937 0.48 20 12 2.4 0.01 1.32 937 0.48 20 12 2.4 0.01 1.31 912 0.48 20 12 2.41 0.01 1.32

These are my A/F ratios via my wideband.

2 Gear – 13.1 A/F @ 5000rpm
2 Gear – 12.7 A/F @ 6000rpm
2 Gear – 12.2 A/F @ 6500rpm

3 Gear – 13.2 A/F @ 5000rpm
3 Gear – 12.5 A/F @ 6000rpm
3 Gear – 12.1 A/F @ 6500rpm

Any ideas if these are good or bad?

 

[warpspeed]

The readings at 5k revs are too lean...shouldn't be any leaner than 12.8-1

 

[Fast Guy]

I thought 12.8 was too lean under boost?

 

[Fusion Ed]

It is.

This car needs fuel pressure and compression test.