i heard from some1, that all cars are different, and that u arent meant to redline it when racing some 1 LOL, like each car model has a specific sweet spot to change the gear.
I think the manual states what revs you should shift for best fuel economy, if that is what you are after.
the best info here...and it seems to be ignored.
read your manual. not 100% for itrs, but for civics, there is an 'optimal' shift point according to the manufacturer.
but really shifting depends on many factors:
car load
incline of road
traffic conditions
amount of money in your wallet for petrol
your tardiness
how you feel
whether there is a copper around the corner
etc.
IMO, on the race track, you'd shift to the next highest gear when you feel the acceleration begin to diminish, i.e. when the rpm reaches a point where the motor starts to produce less power (because it can't 'breathe' well enough past that point).
At least this is what you'd do until you get used to it. Ideally you'd shift at or just before the point where the power band starts to tip over, rather than than when you can actually feel it start to happen. With practice you just get to know at what rpm this is, and you generally pick it by ear.
Originally Posted by trism
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