Just bought a brand new TE450 -08. First time on the enduro course I did the sound check we all need to do. In sweden it's not allowed to be above 94dB. I had the big original catalytic muffler on and the standard "db killer" installed. The thing is:I DID NOT PASS THE TEST 
Have anyone experienced something similar?
I am currently waiting for the dealer to supply me with the P/U kit Arrow muffler.
Does anyone know if this will give less than 94 dB?
I don't want to be the one who takes the blame for disturbing the neighbourhood. Is there any other aftermarket muffler that would do the trick?
Does the EFI need to be adjusted is choose not to go with the Arrow?

Have anyone experienced something similar?
I am currently waiting for the dealer to supply me with the P/U kit Arrow muffler.
Does anyone know if this will give less than 94 dB?
I don't want to be the one who takes the blame for disturbing the neighbourhood. Is there any other aftermarket muffler that would do the trick?
Does the EFI need to be adjusted is choose not to go with the Arrow?