I'd say it's more to do with the stock torque converter, the boost issues we was having on the day, the 50mph headwind that everyone struggled with. We was hitting 2.3/2.5bar of boost on a 1.6bar setting and was boost spiking bad, just one of them things....why do you think the Syvecs isn't doing its job? Why do you think the Toyota ECU is better? As dad previously said, you need to go out in dads supra and get a flavour of what it can do on the street. I'll happily take you out in it and show you the sport auto mode, flappy paddle setup etc...
We could easily put a TH400 gearbox and 4000rpm hi stall in the car, wack a pair of Mickey Thompson radials on and probably run mid 10's all day.