Adding a turbocharger to your car can increase its horsepower, which in turn can improve its acceleration and top speed. The exact increase in speed would depend on various factors, including the specific characteristics of your car, the type of turbocharger, and any other modifications made to the vehicle.
Its not particularity good, but it does its job in keeping you in an pleasant viewing as well as showing some very disturbing stuff - this movie is not for children, that is for sure. Overall, "Terrifier" is not bad horror movie overall. Its very disturbing, but its not a gore fest (i hate those).