That was the first time I had ever heard anything about that.
97 pcm's have a lot of issues with false knock and other little bugs that 99+ gp's don't have. Making HP on a 97 setup ain't so easy tuning wise. Its a hit or miss
06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k