Reduce the weight of the car is the most effective way, exp: light weight flywheel, light weight crank pully, take out all un-wanted things.
Use the engine power effectively, by understanding the power curve.
Base on the dyno chart, the best torque output is between 4,000rpm~5,200rpm, every time you shift gear with in this range, the pick up will perform more better. Because this is Campro engine performance.
Thinking using less fuel and have more torque to pick up, there is no such thing :hmmmm:
Ofcourse, Diseal engine can do this (powerful low end torque), but you can't go faster.