Also ook at this topic of the results from this years exhauststest. Remarkable is the difference in score between the different kind off cylinder bores. It is said and i’ve heard on the bigger cylinders it wil perform not that well, but untill the 43mm it will go very good as for top speed. Definately better then a Proma cc in the 3 personal test I’ve had.
Therefor I will make sure to test this exhaust again on a bigger bore, because i will have more testresults. 😉
Also ther is no difference in the old or new version of this exhaust, but maybe there is a slight differnce between the Ciao and Si model. This is because the front of both pipes is different in lenght. It’s good to know. All my test were with the Ciao version.