Originally Posted by
blackevo110
its not, maybe something happened during your run, like if your tires skip on the rollers, you have a hiccup in throttle (rich/lean spot in fuel map), a few outside things could cause this too. Keep in mind i am by no means defending that specific dyno, im just providing the reasoning (possibly)
for the GTO, your numbers reflect very well your quarter mile times provided those are current. You car is strong, but heavy...so low 13's is indicative of your numbers on the Mustang.
I did three runs, 105, 105, 105.
Car runs perfectly, no leaks, plenty of mods other than stock boost. I know the highflow muffler attached to the three inch apex piping sucks, but not enough to kill 120hp off. the car shoulda put at most 210-220.