mmmm....not sure about the poke to 8100rpm. when i first watched the vid i thought the rev counter was the speedo slowly increasing! it might have been smooth but it doesnt look or sound like its punching through the air with the usual GT vigour. with a lower rev limit and a more useable set up lower down would it have shifted quicker with a change up in 4th at say 6800-7000 then your back on the turbo moving into 5th? it seems like the new generation turbos that can have the back revved off them with little or no noticeable turbo "kick".