Quote from Geoff on another forum.
"i will get two sierra sierra dynoplots posted on full-race.com later tonite. The comaprisons are of the 8374 and the 9180. dyno runs were all done on a mustang dyno at 2bar boost, and the cam gears were played with a bit. Unfortunately these were some new cams they were testing out and not the actual cams that are in the car for race day, so tq was dropping off hard and the turbo wasnt spooling as early as they liked. I asked them to redyno the car with the right cams and we will get those dynos updated".