I just cleaned my Mega Cannon filter for the first time since Aug. 12 when I installed it. I live in the desert and the conditions are very extreme. Hauling stock and hay in winds (dust) up to 35+ mph I found no dust on the turbo blades. Not even a speck in the rubber boot going to the turbo. I am very happy with this filter. I would highly recommend it to all who have modified trucks.