also what the TM does is if the tires start to spin it will hit the next gear right away and bog the engine,when you powerbrake with a GM truck manualy shift it from 1St to 2nd and so on..works great even for 600FT burnouts..wish i had pics of that one
m(this one isnt near that long but still roughly 150FT,pic was taken half ways thru..thats with 33-12.50R20 Toyo MT's)