Turbosmart Kompact EM BOV VR9 Dual Port FrankenTurbo Most N55 tunes will adapt

Most N55 tunes will adapt to the downpipes within a few drive cycles

Expect to unlock 150-200+ additional wheel horsepower over conservative factory-limited tunes

You'll notice sharper boost retention at part-throttle and cleaner transitions between gears

The N55's factory twin-scroll turbo prioritizes efficiency over power—our Stage 2 hybrid tears down that wall with a larger compressor wheel and reinforced internals that push your single-turbo straight-six into serious power territory

The OEM rubber mount flexes under load

Turbosmart Kompact EM BOV VR9 Dual Port FrankenTurbo Most N55 tunes will adaptStock 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