M4 Exhaust on GSXR

[Halo_2]

My two bros exhaust is loud, my neighbours told me and so did my dad as i overtook him. Havent been asked anything about it.

[on1wheel]

all i know is its friggin loud

[jackerz]

is it 120db???

i think i heard that some were...

yeh caillin on here my mate just got the m4 ... mmmmmmmmmm yummy

[on1wheel]

put on M4 exhaust on my gsxr 100 today OMG what a wicked sound.
can hear the bike for ages.
small flat spot around 6 grand in first will be getting that sorted out tomorrow.
anyway my question is has anyone been pulled up for loud exhaust on a sportsbike.
what is the legal db level