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Message: <blockquote data-quote="Ecc0" data-source="post: 29590" data-attributes="member: 20086"><p>..hi guys..what is normal rpm range you keeping your M, during cruising on highway..Im asking because, today i was driving a bit my coupe, and during steady motion i switched in to 6th gear and kept it around 2000-2500 RPM..reason im asking is because im not sure, about such rpm range, am i going to 'choke' engine or fuel will not have complete combustion so it will make engine 'dirty' or basically keep in engine in some kind of 'bad working mode' by doing this, considering that peak rpm is slightly more than 3 times higher?? I have heard that some folks claiming that engine must be revved high in order to 'flush', whatever it is that has to be 'flushed' out..so..how?</p></blockquote><p></p>