Turbosmart Internal Wastegate Borg warner EFR Turbosmart GenV Twin Port Internal Wastegate Actuator to suit Borg Warner EFR Series Turbochargers. This IWG actuator, has it all taking technology from the Award winning GenV range of External Wastegates providing unparalleled actuator performance. Turbosmart GenV IWG (Internal Wastegate Actuator) Range provide improvements in boost control over your factory actuator. The large working surface area of our unique diaphragm system ensures increased boost response and control, at any performance or boost level. Using Turbosmarts locking collar system, you can also quickly change your base spring selection from 5, all the way up to 26psi. The Nitronic guide & Hard Chromed Intermediate Rod, mated with the swivel joint system ensure the best possible lower chamber seal for true twin port control strategies, unequaled actuation range and control. Features: GenV cap including 1/8NPT reference ports & optional (HE) Hall Effect Position Sensor True