V-spec he is talking about legally quiet but aftermarket
Good stand Jax. This also appears to effect all exhaust manufacturers and retail outlets and may be of interest to them, and that sector of industry is too large, and too many jobs can be lost, if this gains momentum.
There is a reason ADR's exist, and states are obliged to follow them under federal statutes. After a bit of reading though it appears that NSW has followed SA with protecting Police against mistakes in knowledge and judgement.
Ultimately if you are not guilty then costs can be sought, but you have to be prepared to follow it through.