The 257 cams can perform very well in a 95". I suspect your tuning more than anything. I prefer the SERT but someone familiar with the PCIII should be able to do much better. You stock heads could of been made to perform at least as good as the SE perf heads but I don't think that is where your problem is. I'd find a new tuner and go with what they suggest, SERT or PC.prophet said:
Here is an example of a 95" with 257's
