While some foods make the digestive process difficult, some foods can ease your digestion. They have stomach-soothing properties along with vitamin supplements that offer digestive benefits. Therefore, you need to choose foods carefully should you not desire to slow gastrointestinal tract function. Following are 6 foods which can be beneficial to digestion. Let's take a look at now. 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.