if your puffing a little diesel smoke under load, your never gonna get in trouble.
...if your are using it as a weapon...filling up the interiors of low riders dumb enough to drive aggressively in your presence (side exhaust) ..or making the occasional tailgater dis-appear (stacks)....and you get caught....no mater what state you live in, the cop is gonna find something to write you for.
It's ok to occasionally nail it off boost, & freak out an excessive tailgater (mine has LOTS of fuel...I can make 2 lanes dis-appear on a clear day...COMPLETELY!) but you have to use this weapon responsibly. Make sure there is no one thats gonna rear end the guy when he stands on his brakes 'cause he can no longer see the road! ...and make sure you dont get caught!!!