Maybe its just me, and programmer speak, but i dont see anything in there for barometric compensation. All i can see is Alpha N with MAP blending for the likes of ITBs and forced induction, where the map sensor is connected before the throttle, therefore only ever reads ~100kpa (atmospheric) or above (boost). what about stand alone Alpha N with barrometric compensation, where if you tun at sea level then drive up a hill atmospheric pressure drops and the engine runs rich.
Maybe it can be used for barometric compensation but thats not how I read it.
I confirmed yesterday that it doesnt need much for the barometric pressures to change. While sat at the top of the Great Orm in Llandudno North Wales (not very high) with gale force winds and rain, MAP sensor was reading 98kpa and the engine was running rich with a 8% correction taking place. Drove down to the sea front (couldnt get any closer without getting your feet wet) with the weather improving and the MAP sensor was reading 100kpa and corrections were down to 2 - 3%
What is strategy for the barometric compensation setting in Megatune Constants menue?