2.4 Ecotec STFT - LTFT settings
Hello, I am new to HP Tuners, hopefully everyone will bare with me, as I learn.
I have a 2.4 LE5 installed in my sandrail, with a stand-alone harness and ECM & it is running rich. I have replaced the O2 sensor, cam sensors, MAP sensor, fuel regulator/filter & spark plugs. I have done a spray water test to check for vacuum leaks & did not detect any. I have done a data stream with my scanner & the STFT is @ 32%, and does not fluctuate. The LTFT is @ 19.5%, both of which are out of specs.
My question is: Is it possible that these percentages were programmed into my ECM ?
Thanks.....