On the way back from Summernats I smoked 1 of those old 351 Ford GT's, he thought he was all smart pulling up beside me and giving it afew revs, i dropped it from 5th back to 4th (if i went to 3rd it would have been over much earlier) at about 100km/h and flattened it on 7psi (didnt bother switching it to 12psi) so back then 7psi for me was about 180rwkw or something, bye bye ford GT.