I have bought a PK50XL Sito exhaust artno:24981000 . I was wandering if there's a ring in it which you can place/remove to decrease/increase enginepower?
I need this because I need my vespa aproved by the dutch government in order to make it road legal.
I believe I need to decrease the power of the engine because it may exceed the max speed of 45 km/h, after aproval I will ofcourse remove the made adjustments.[:O]
It concerns a PK50 xl plurimatic engine according to german standards with a 50cc aluminum cilinder.