Real fun isn't it !

talking to Ric wood (cnc heads) at the dyno yesterday he had a similar issue on his 1200bhp 1200lbft skyline engine. He used the recommended turbos, but just couldn't control them - he ended up using a turbo 2 sizes smaller and still made the same figures.

talking to him together with my tuner, the goal will be a smaller turbo which we want to be making decent boost by 2000 rpm and one that will not choke the engine at over 500 bhp..... Apparently with today's technology it should be possible. It's a case of seeing what is available and hopefully there is something that will fit with my v band flanges!