Hello I have tuned 2014 3.5l Ford Flex. Nice gain 50 HP and 40 nm of torque. Around 15 PSI of boost 0.85 WOT lambda 8.5 spark advanced. There are wideband o2 sensor mounted, so I was thinking to force a little bit leaner fuel mixture on the light load but I really don t know how. I was trying to force open loop cold table by setting very hight ECT and lambda temperature value but Flex still want lambda 1. How to force lean mode best in CL ? Can I change the stoichiometry value ?
Best regards.