Tim M04

Hi new to the site. I'm currently in the process of fitting a 25 into my 32. To make it street legal I've been sent a list of things to make the car comply to aust rules and regs. I have a 3" hi flowed exhaust the whole way through. I'm wondering if this is going to cause my car to b too loud and also if this will effect the emissions? Any help would b appreciated thanks