Um yes.
Most mods to a car require a engi cert from my research, and straight throughs are stupid loud.
My twobros exhaust is a racecan with a street legal dB killer, and thats loud (but we dont need certs for mods that dont effect structural integrity)
http://youtu.be/5-CCZZdz1U8
Thats mine...
Dbl lane?
As in two way street or two lanes per side?
Its not a race track mate, if you want to speed youre better off hitting up Wakefield race track.
RNP is a HWP sesspit.
I went through there on new years day and didnt see any, but usually I read a story that they are camping a corner or baiting riders.
Furthermore theres been a few incidents of oil being purposely spilt on a few corners to cause accidents, my money is on the towtrucks...