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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. Nowadays, special attention will be given on taking nutritious diet and exercising. Intake of proper nutrients in your diet helps with having healthier hair. A physical activity that needs rigorous exercise also helps with developing a good health that consequently works well for maintaining strong hair. In addition, consuming natural foods also plays a substantial role in taking nutritional supplements which are clear of preservatives, chemicals and other processed items.