the7ferret

We all know that at non WOT situations the car uses the o2 sensors, and at WOT situations it uses preprogramed fuel maps. Has anyone found a way to disbable that so that it runs off o2 sensors all the time? Ovibisouly we have found ways to reprogram the WOT fuel maps but wondering if thier is new technology out there.

aforst

In a nutshell you would not want ecu to make adjustments based off an 02 sensor reading at WOT. The factory and their mega money / time have pre progammed maps (air/fuel and timing) For a reason. Unfortunetelly mods that increase breathing will lean out the mixture. Intake headers exhaut. If the mixture is not too lean you will make more power. If mods lean it out too much you can get misfires or knock. And know the ecu pulls timing = Less power. Tunners use wideband O2 sensors. A dnyo and EGT sensors to make changes to fuel or timing maps.