I have just bought a PM 360 stage 6 filter new 5.5g rollers and a de-restricted manifold for my piaggio typhoon at the moment it is standard but has been de-restricted how does anyone know how much power these after market parts will add roughly??
a 70cc kit, if i was you i would buy a polini sport 70 cast iron kit, and with your aftermarket exhaust, filter and a variator and belt, i would be guessing a 10-15mph improvement, approx 60-65 clock speed? from what i have been told
^^ has it about right. Not sure why you bought a de-restricted manifold though. The only bikes which had a restricted manifold were extremely old.
