To the Next Level: Truck programmers can rev power and performance

摘要

Want better fuel economy from your truck? More pulling power for heavy loads? Faster acceleration? That's what handheld control modules, power programmers, performance chips and engine customizers claim to do. In simple terms, the programmers, available for gas or diesel engines, override the factory settings of a vehicle's computer system, which are set for average operating conditions. By readjusting air and fuel ratios and resetting spark timing and transmission shift points, the programmers seek to extract unused power and performance.