Mine passed noise testing at Thruxton but it is not as quiet as standard that is for sure and quieter than many Harley’s. The upmap smoothed things but did not add any power that I could detect. With the way speed limits and their monitoring is going having a powerful bike achieves nothing as it can only be exploited on track if you value your licence. 100 hp is way more than you need to ride to the speed limits, that said inadequately silenced small capacity bikes can be very antisocial and are probably more numerous.
I went with an Akrapovic can on my 1260S , Black Friday deal from Calsport ( still £820!) I then bought a dominator cat delete pipe ( around £130 posted from Poland ) sounds absolutely stunning !
