[Ray]

Weeksy,

Every little helps as they say, it should be checked, then its up to you where ya go from there, tune it for the compromise you prefer, top, middle or low range.

Some DD bikes have a distinctive exhaust note that might indicate where they are tuning wise or maybe its just the exhaust set up?

Despite the reasonably tight regs there's scope for making the best of what you've got on the bike before ya start on the rider!!

Ray.