Car Upgrades A performance exhaust system can improve both horsepower and fuel efficiency. True False None A suspension upgrade is only necessary for off-roading or racing. True False None A high-quality sound system upgrade is one of the easiest ways to improve your driving experience. True False None Installing all-terrain tires only benefits off-road vehicles. True False None A tuned ECU (Engine Control Unit) can boost horsepower without physical modifications. True False None Time's up Most Popular Most Popular
