Originally Posted by flinchy
also, due to how gearing works, acceleration at redline relative to in a higher gear should pretty much always be better.. unless your car REALLY tapers off badly.
You'd be amazed how many cars benefit from shifting before redline. This is especially true for turbo charged cars where the torque band comes on early. I've done plots on a couple of cars (one turbo, one NA), and both benefited from shifting before redline. The turbo charged one more so than the NA. Both were running stock ECU software.
Gearing multiplies torque, but it does not affect power. Peak acceleration will come at peak power. Engines like the S54 will work best when shifted at redline, but that's the exception, not the rule (for road cars).