That was done with the same kit but at 6.5 psi of boost. With an increase of 3 psi and a 91 / MS109 fuel mix along with meth injection the result is another 64 wheel horsepower. That is just about 20 wheel horsepower per psi of boost increase on the same blower. Obviously you can only push so far on the stock motor before you risk the engine and see diminishing returns as the supercharger is pushed out of its efficiency range.
It is very nice to see the S85 V10 finally showing what it is capable of with boost. A built motor with a bigger blower will likely easily eclipse the 1000 whp range but that is something which will come down the line.
Great work by Gintani pushing the envelope as always.