The EGR system routes a number of the exhaust gases (6 ? 10%) from the EGR valve, last on the Intake System, and ultimately within the combustion chamber. The exhaust gases are inert i.e. they cannot burn in the combustion chamber; also, the exhaust gases take up a number of the space which would preferably be taken with the intake air. This reduces the volume of intake air readily available for the combustion process during each Power Stroke; which in turn decreases the peak combustion temperatures. This brings about lower NOx emissions. For many, breakfast will be the hardest meal to obtain used to when changing from your gluten diet to some gluten free diet. Many of the common breakfast foods for example cereal, bagels, pancakes, toast, and waffles are common filled towards the brim with gluten products. Don't be too wary though, a is quickly accommodating the increasing demand high have become cereals, waffles, English muffins, and bagels that are free of gluten. Many are sold at any large grocers so be sure to book the bread and cereal aisles on your next trip. The EGR system routes many of the exhaust gases (6 ? 10%) through the EGR valve, last on the Intake System, and in the end in the combustion chamber. The exhaust gases are inert i.e. they don't burn within the combustion chamber; also, the exhaust gases use up a number of the space which could preferably be taken with the intake air. This decreases the volume of intake air available for the combustion process during each Power Stroke; which experts claim decreases the peak combustion temperatures. This leads to lower NOx emissions.