Just got an e-mail presumably in response to some "Piss-off! Let us keep our aftermarket exhausts, ya wankers!" email I shot off at someone with a bigger office than mine. Here's the overview: The 2 relevant PDF's are here: http://www.uploadthis.co.uk/uploads/Ktulu/0880infonewprovs.pdf http://www.uploadthis.co.uk/uploads/Ktulu/0871infomv.pdf Basically: noise tests will be while the vehicle is moving [a 'drive-by' test]. Maximum allowable dBa levels are about 2-3 lower than before. Motorcycles are exempted from requiring baffles to be 'securely rivetted or welded' as long as it's as it was manufactured [ie. if it comes with bolts, that's ok]. But if you want to run around without baffles then put them back in to get a defect notice removed, you might have to prove a case. Police persons' own 'opinion' that something is noisy enough to deserve a defect must now be "reasonable". The difference between a reasoonable and an unreasonable opinion is undefined... so that bit's probably just lip-service to make it seem like our rego isn't at the whim of whether an officer likes our vehicle or not. This is off my quick read-through at work, so by all means read the docs for yourself and check 'em out for how they might affect you. Time frame is for phasing of these conditions over the next 2 years.