I have a custom air intake that is a 3 inch maf mount. So I decrease all of my maf scale vales to count for the change since I was getting a CEL. Now I seem fine but my STFT is running -15 to -20 how do I fix that?
I have a custom air intake that is a 3 inch maf mount. So I decrease all of my maf scale vales to count for the change since I was getting a CEL. Now I seem fine but my STFT is running -15 to -20 how do I fix that?
I have a custom air intake that is a 3 inch maf mount. So I decrease all of my maf scale vales to count for the change since I was getting a CEL. Now I seem fine but my STFT is running -15 to -20 how do I fix that?
Do this at your own risk*
First zero out your LTFT then put MAF setting back to stock. Let your car warm up to operational temp then datalog a few pulls. You can either eye ball scatter plot (X-axis Maf Voltage and Y-axis STFT) or convert to cvs and sort out nessary data. The best way is to work on a voltage rage like 0v-2v then 2-3v ect whie changing g/s for that range by %. If you want to be conservative with the change, at the most only do 5-2% for the first change adjustments. Then adjust each section by something like .5%+/-. The percentage of change should get smaller and smaller as you get closer to the ideal stft.
