Silent reducer in Tarpan Honker - is it possible?

The sound of a working reducer is associated with both the 4011/4021 Tarpan Honkers and the later 4012/4022 versions produced at the Poznan FSR. Some call it a monstrous noise that is difficult to bear, others call it a whistling, howling or even singing noise that intensifies during acceleration and fast driving. The good news, however, is that there is a way to make the honker reducer of this generation [...]