so my engine is a 4.6 4v with a GT40 turbo at 8 psi... I used to be making 470 hp and 490 lbs of tq... but that was at stock compression. I had Tim lower the compression to right around 9.0:1 so do any of you engine Guru's that lurk around stangnet have any guess as to how much power I will lose with a lower compression at the same psi?