I also had no bloody luck, when it came to tuning my cam gear, infact I lost power.
My engine is a series 2 RB25DET (1996 ECU) running 7 psi of boost.
With the cam gear set at zero degrees, it put down 154 Kw, with A/F ratio's almost spot on at 12:1
With the cam gear set at 2 degrees retard, it lost about 10 Kw, as the A/F ratioswent to 11:1. I believe if the A/F stayed at 12:1 I would have got more power, as the power curve looked to develop peak power later in the rev range.
We didn't go any further with the cam timing, as time is money, and it looked as though there was nothing to be gained with my Std computer.
Any thoughts?