Triumph mounted a type from vacuum carburettors on those new Bonnevilles, and this limited the fun to drive a lot.
I have changed those against the same type of carburettors as sitting on Triumph Bonneville T120R from 1968 to 1970, but of course a newer and better model, with wires operating direct on the trottels.
At the same time I changed the airfilters to a normal model from airfilters, the same type as sitting on Triumph Bonneville T120R from 1968 to 1970, but of course a newer and better model.
With those new carburettors and the airfilters, we becam the old sound from the carburettors, like from Triumph Bonneville T120R from 1968 to 1970.