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The EGR system routes a number of the exhaust gases (6 ? 10%) through the EGR valve, back in for the Intake System, and finally inside combustion chamber. The exhaust gases are inert i.e. they do not burn inside the combustion chamber; also, the exhaust gases occupy a few of the space which may otherwise be taken from the intake air. This cuts down on level of intake air readily available for the combustion process during each Power Stroke; which often decreases the peak combustion temperatures. This ends in lower NOx emissions. The Bureau of Labor Statistics(2) outlines that self employment is the primary means of working in the bridal consultant business ' in 2006 it was to the tune of 80 percent of wedding planners, who worked for themselves. The entrepreneur works outside the standard nine to five schedule and is on call during holidays, nights and weekends.