What is this measurement mean?
I am catless if this is the CAT o2 sensor then I should have no reading
Any advice?
Short term fuel trim (secondary sensor) (%)
Re: Short term fuel trim (secondary sensor) (%)
That sensor will still read if it's there. Ideally you should disconnect it and deactivate the related PIDs because in certain conditions in closed loop (especially at or around idle) the ECU logic will try to use the data from that sensor and adjust things which do not apply any more.
2008 Cosmic Blue Mazda 3MPS
Built engine + WMI + GTX3071 gen2, ~509BHP @34PSI
2008 Icy Blue Mazda CX7
Stock engine and exhaust (YES!!), JBR3" + GTX2867 gen2 + Autotech HPFP, self-tuned to 330-ish BHP
Built engine + WMI + GTX3071 gen2, ~509BHP @34PSI
2008 Icy Blue Mazda CX7
Stock engine and exhaust (YES!!), JBR3" + GTX2867 gen2 + Autotech HPFP, self-tuned to 330-ish BHP