of precise fuel and ignition timing control that others enjoy any 4 6 or 8 cylinder ... commander 950 systems such as idle air control motors closed loop control speed ... density operation ignition timing control and full laptop programmability ... and spark management features such as cruise control transmission control air ... conditioning abs etc are not controlled by the commander 950 description 4 cyl ... 950-20s b available separately · gm th-700r4 transmission cable bracket part 20-96 ... or use in california on any pollution controlled motor vehicles or see page 2 for symbol ...