I just stumbled accross this thread again and thought I woudl give out some feedback. I swapped the inlet cam on my RB20DET for an inlet cam on my RB20DE. At first I did not notice a real difference, but when you put you foot down - boy is it sh!t. This was a massive waste of time in my opinion and I was soooooo happy to put the stock cam back in. For anyone who would like to try this for themselves I paid $100 for the pair and ended up giving them away as it was too painful thinking about the time I had wasted rooting around with this. Maybe they just don't work as well in Australia as they do in NZ : )