I had this notion that any jammers are illegal in this state...so I don't know what kind of fine you'd incur there, but by all means proceed at your own risk...
Well, in addition to a reckless op being 20+ mph over the speed limit, which will NOT be easy to fight in court, I guarantee it, you could get a potential criminal speed violation, or so I have heard. In any case, if they had decided to chase you, they would most likely have arrested you because they are allowed to estimate speed based on how fast they have to go to catch you. Be smart and more importantly, safe