I don't mean to argue, but there is a GN that went pretty quick with a P-trim 67. It has 3 passes in the 137mph range, 1 pass in the 138 range and 2 passes in the 139 range with the best being a 139.96....
Check out the Alky section for more details. The car belongs to JC'sGN
In that mix there are five 9 second passes in there with the best being a 9.82. The rest are made up of 10.0's
I am not sure if these are enough runs to make the claim that this car is a true 9sec car but it certainly isn't a "one hit wonder"........
So I wouldn't dare say this is typical, but the turbo is capable of getting there. As was mentioned in this thread, tuning, traction and the driver all play a role.
These results came from a lot of runs on the car to get her dialed in so it was certainly earned.