What engine performance upgrades come standard on the X-18 or X-18S?
The standard engine on an X-18 or X-18S is a GM 2.2 liter Ecotec. These engines are assembled and built by Custom Built Motors and are assembled standard with forged racing pistons and are built to conform with GM 2.2 liter engine factory specifications, as well as EPA and CARB standards. All engines have a forty hour or 90 day warranty whichever comes first, provided you are not racing the car.
