I think the one that I was playing with was probably standard TBH. He just couldn't gain on me at all. After 120 something????? (on the private road) I just kept pulling away. On the same drive home around the private road, I took on 2 Astra VXR and they got embarrassed. I ended up on my ass against another Vectra that had been fettled with a turbo producing 280bhp and 250lbs torque.
If the ST had of been tuned I would have come a cropper. There was an interesting little drag between myself and an M3 when leaving Silverstone too. He couldn't keep up until we hit 4th gear. After that he was long gone.
;-)