[Shan2nu]

Generally they say that an engine is most efficient from max torque rpm to max power rpm (since max power is achieved when the combination of engine speed and torque is at it's strongest point). So, redlining every gear maynot be a wise option especially if max power rpm and redline rpm are spaced far apart.

But you also need to see how the gear ratios have been set. If shifting at max power rpm slots the next gear lower than the max torque rpm (below the power band), performance in that gear is bound to drop till you hit max torque rpm.

So unless you get a complete torque and power curve chart for you car's engine, you can only hope for positive results.

Shan2nu