Turbosmart Kompact EM BOV VR9 Dual Port engine-s55 G29 Z4 M40i

G29 Z4 M40i

F26 X4 28i

The upgraded internals handle 22-24 PSI reliably while maintaining the factory turbo's spool characteristics

Power gains scale with your supporting modifications — naturally aspirated builds see 8-12hp gains

Turbosmart Kompact EM BOV VR9 Dual Port engine-s55 G29 Z4 M40iStock diverter valves leak under pressure and respond like molasses when you need instant boost retention. The Turbosmart Kompact EM BOV VR9 Dual Port delivers pressure relief that's 57 times faster than your eye can blink, giving you the throttle response your BMW's turbo was designed to deliver. Performance Gains Expect immediate improvements in throttle response, especially during rapid gear changes where stock diverter valves create lag between