News flash. I was riding up at Marysville in Victoria over the weekend and noticed that the new airbox is alot more susseptible to altitude than the original. No, I am not imagining it. 2 months ago I rode the WR in dirt mode up here and I had no problems. 180, 48, 1.75 turns out. I rode the WR on rode mode with the new airbox and 180, 48, 2.25 turns out and when I reached about 3000feet it really started to **** itself. Had to turn back and ride lower altitude. When I reached a lower altitude she was fine... Another aspect to consider is cold air. Zero degrees. Since the airbox has a larger volume, can plenty of cold air impact on the bikes performance?