Mp3 500 HPE Advanced owner here...
I just installed j.costa in my stock almost new Piaggio and it runs great.
But somehow i wanna do something more... I dont need top speed (now its 157kph), if its 130 thats ok, i ride in the city mostly, i need accelerating.
The j.costa did help with accelerating but i would like more of it. What gramm bullets are best for max accetilation?
Do i need a new spring like Polini (blue spring) or keep stock?