Would be nice if it works BUT i suspect its another of those Magic snake oil dreams. Mind you at under £20 it may be worth a punt
Brian
you fit that in-between the turbo and the wastegate so it blocks any pressure getting to the wastgate until it lets go of pressure that you have set it to, and then open the gate
they used to be called "dawes devices"
they work really well on petrol turbos (as long as you dont overdo it)
but diesels are different, its no good upping boost without upping fuel
and anyway its much easier to just shorten the wastgate rod on 200/300tdi's
how easy is it to adjust the wastgate rod ?