gt4dude wrote:you're supposed to keep a copy of the cert sheet in your car, it has the full diagram of your exhaust showing everything thats in your system with lengths and diameters. if you get pulled over again you can ask him to look under your car, and compare it to the cert sheet.
Paperwork and sticker doesn't matter, if they say its over, its over.
Though if this was to happen to me I'd probably ask the certifier to stick the new sticker beside the old one!