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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
it delivers superior durability and heat resistance for demanding turbocharged applications
Compatible with all OEM and most aftermarket turbos and downpipes (USDM LHD)
designed specifically for Subaru WRX (2002-2007) and WRX STI (2004-2021) models
time and time again
Grimmspeed Manual Boost Controller Black YMM_2009_STI it delivers superior durability andWelcome to the most refined manual boost controller available on the market today. During development, we worked hand in hand with tuners across the country to develop this device and ensure that it solves legitimate problems that they have with other existing boost controllers. The GrimmSpeed MBC allows you to raise OEM boost levels in a quick and efficient manner through superior boost range and ultra fine resolution (. 25 PSI click). Adding the MBC
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