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From the chemical side, the answer is quite simple. When burning 12g of carbon, this carbon takes 32g of oxygen from the air and so forms 44g of CO2. The reason is simple: One carbon atom weights 12 units, one oxygen atom 16 units. So a CO2 molecule weights 12+2*16=44 units. So, if you know how much carbon is in one liter / gallon / kilogram of fuel, you ...


As a vehicle technician for BMW I can assure that it is good for your engine to get rid of EGR. EGR systems are there to improve the exhaust gas quality and slightly win a few miles on a tank (in theory). What really happens is quite different. Your oil will become polluted quicker, your manifold / intake will get clogged by excessive amounts of soot and ...

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