Police Looking for Modified Exhausts in Chelmsford

[Socr8s]

Heard on the radio a couple of days ago that Chelmsford police starting to use sound monitors to identify cars with particularly loud exhausts. Not sure what the outcome of this would be if your car was identified as being "anti-social" and less of an issue for me now that I have sold my Scoob, but I didn't know if anyone else knew anything about this and whether it is likely to roll out over the rest of Essex?