levels?

Looking to service my own bike (rather than pay dealer prices) but was just wondering how often the CO levels should be checked. Main reason i ask is that the guy that had it before me had it setup for Akra cans without baffles (MAP2 and presume they would have setup the CO as well) I've...

Hi all, Does anyone know the noise db level for the Aprilia racing titanium exhausts? Have just had them fitted and they sound awesome but my concern is I have booked a trackday at Cadwell next week and wondered whether they would be okay for the 105db limit.:dunno Also, this is my first...