Simply do to awesome driving and a car that could put out near 400RWHP in that stock turbo configuration. Plus it seemed that many never took that car up to a 6k Rpm launch before this year, also Slicks seemed to become a common word around here, yet Supra's have been running them all along. Also, NO ONE was saying run 19+ Psi on stock turbo's and or Injectors ( in some cases ). Almost like many think that Z can't handle it or it doesn't match up to a Supra.
Where I and you, many others knows that it can and this is why we see all the post on here of Non-Believers. I think once someone broke this doubt and all could see, then this is going to push people into knowing that there cars can take this kinda of stress and they can beat that guy that's lined up next to them. Because racing the Z tt has been going on for years, yet in the same week, we have two in 11 second passes on both sides of the states.