Well I have managed to get 100+ miles on the polini kit now and as it was running very rich on the standard airbox I have fitted the pipercross filter that I meant to keep until running in was a little more advanced. With the standard airbox, even running in the extra cubes were apparent, but now with the pipercross---WOW. The running is very uneven around the usual 6000rpm stage but then when the power kicks in WOW. This to me, and bear in mind that I am still running in carefully and not revving the tits of it, this feels to me like my old 350 LC Yamaha. Those of you who know will recollect how the power kicked in on these bikes, instant wheelie yeah? The Aprilia power kicks in hard and forces you back against the seat, the riding position and bars keep the weight forward but the front goes distinctly light and the rev counter needle heads for oblivion. This is fun now and will be great when running in is complete if I donít blow it up first. The low-mid range is a bit of a pig though, you cant go everywhere at 8000rpm + It feels over rich.
Has anyone got any tips on how to best tune the 34mm carb for mid range use?
Has any one actually removed the environmental restrictor bridge in the management system?
Main jet 178
Needle K57 2nd notch
Mixture 2 turns out