I think that anybody who owns a Supra TT in any stage of tune, will use that power on the road.
my 1 and only ever crash on the road ended in me fearing/respecting the roads and un predictable cambers, oil/diesel patches, wet..slippery..other un predictable peeps..that's why i dont ride my YZF with a 1 to 1 power to weight anymore!
It was also the LSD that spat me off! it was up a very steep hill that had shell grip on the down road, as i pulled out to overtake a 15mph van the rear wheels span up, then the drivers side caught the opposite side of the road's shell grip and...WHAM spat me off just missing a 4ft think wall and through an armco that ended 1ft from my head smashing the windscreen!! if i had been spat to the other side i would have killed 2 little girls playing in their garden..The father came and pointed that out to me whilst the Mint storm Blue TT6 was sat battered in the ditch. Everyone i knew seeing it and me stood there.
Ground..swallow...me..up..please!
Shortly after this scare i retired from offshore powerboat racing whilst being national reining champ. I can see now that my sub concious wanted to take away at least one element of uncertainty on a racing surface. Although the Drag strip can be variable, it will always be FLAT.
My daily driver now is an Audi Quattro Allroad and the Stock trac on that comes on all the time!
Some basic rules will help though. Never boot on unfamiliar roads..never boot it from cold as cold tyres and intercooler will increase initial torque by quite a large percentage. In the wet wide tyres are worse. Fatigued driving, Car set up/handling faults..the list is endless. The way i see it is that Supra's are MINT and i would love to always keep em..and their drivers in that condidtion ;-)
So my experience led me to the tracks where i could be a Lead foot loon without the cause for personal..or heaven forbid public injury!
I guess the answer i was looking for to this thread was how the stock trac system actually works. Then we could understand if reducing the Butterfly would help or hindre the stock trac weaknesses.