but she does say in westphalia audie fans regularly meet to show off their dream cars some of which are older diesel models an emissions category you're all for. the roar of the engine is unmistakable. things to preserve this is the classic engine sound from the injection jabs the stacking sound this opening that's what makes it rattle like that couple of the. audi developed special software the so-called acoustic function allegedly in an attempt to muffle the sound. but in fact to use the software to rickets emissions tests on the euro for diesel cars from 2003 to 2010. a previously secret memo from the federal motor transport authority is testimony to this. the authorities sort. fight the acoustics function in july 28th noting that the functionality is being used as an un permitted defeat device. to see if so else as of it looks like they came up with the idea of using the software to solve the emissions problem. it all started with audi does. it by september this year there have been no recall of the euro ford vehicles. questions to audi regarding the acoustic function the company in