Oh yeah, 100% doesn't fully work. Still get an EPC light, but I get ~75% turbo vs 0% without it. It's just a stop gap till I find a scrapped turbo I can scavenge the bit off of.
Ended up MacGyver-ing my own out of a steel bracket. It works for a given value of work (that value being substantially lower than the £1800 required for a replacement turbo to be fitted!).