I'm looking for ideas,01 Kia Optima 2.4l [...] idle LTFT is at 16% and STFT is around 0%,off idle the STFT goes to 19%.At times the O2 signal will stay lean (off idle)but responds to a snap of the throttle.

The MAF tests ok as per Vantage,I thing I noticed i... Login to read more.