well if you want to get technical, in order to determine your optimum launching and shifting points you need a dyno sheet. In real world drag racing, this is how the pros determine their shift and launching points. There are other factors that come into play with the pros but basically you need to see a dyno graph.
For the average Joe, typically you want to launch the vehicle at just a point that the car will not bogg when the clutch engages. But you also don't want to launch at a point that will anihilate the tires so you have to experiment. For shift points, you generally want to shift about 200-300 rpm above peak HP. But again, you won't know your peak hp points without a dyno graph. Each engine is different but you can go with an advertised hp peak.
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