Normally, power shifting is good for ~.2 0-60 (mags lift shift) and is also "abuse" but at least in this case a wear item is getting the most abuse, though there is significant shock through the entire drive train. When you power shift the revs do not drop during the neutral phase (actually they increase) and assuming your clutch is strong enough for the application you get a solid hit in the butt when it clamps. This type of shifting (on a street tranny) is slower than power shifting since you have to be careful to match the revs (you will have to let the revs drop while you slide through neutral so it engages smoothly into the next gear). No clutch shifting either in an emergency, just to do it, or in a misguided attempt at speed (see below) has no particular name other than maybe abuse that I am aware of, pretending your street tranny has straight cut gears (ie dogbox/crashbox) and avoiding the clutch will cause excessive wear and can break (more likely) or bend (less likely) the shifting forks. Powershifting is when you shift up through the gears using quick stabs at the clutch without ever lifting your right foot, usually done at WOT for obvious reasons, the opposite of this is the "normal" shifting pattern or "lift shifting". It is hard on the tranny in a car but if ya do it right (macth the right engine speed with the right gear) it does give ya an advantage because there is power being put through the tranny constantly without any kind of pause in between gears. As for in cars ive done it in my integra at the track and in the street when i have raced. I do it on my r1 all the time and did it when i use to ride motorcross.
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